Thursday, August 30, 2007

Malaysia: Misuse of pesticide

2007/08/30
Student forced to take weedkiller


By : M. Husairy Othman and P. Chandra Sagaran



Muhammad Shamil Izwan is fighting for his life in hospital

TAIPING: It could be a case of bullying gone crazy. A religious school student, 14, is said to have been forced by his schoolmates to drink weed killer and is in critical condition.


It is believed that school bullies may have forced Form Two student Muhammad Shamil Izwan of Sekolah Menengah Addiniyah Jelutong, near here, to consume the poison.The boy was found unconscious in his dormitory about 10pm on Monday. He was rushed to the Taiping Hospital and was still at the hospital’s intensive care unit.

His policeman father, Ahmad Shokri Ayob, 44, told the New Straits Times that his wife Noorshada Man, 35, received a telephone call at 10.50pm from the hostel warden informing them of the incident. "We rushed from Pengkalan Hulu and met the principal and warden at the hospital. They told me that my son fell ill after drinking water from a water gourd (labu sayong).
"I was rather sceptical and went to my son’s dormitory to see the situation myself. I saw vomit stains on the floor and some greyish stains on my son’s bed."Later, I found out police officers at the scene recovered a plastic bottle containing some kind of liquid from the school’s rubbish dump," he said.

The NST learnt that several students came across the bottle some time after the incident and informed police after smelling its contents.The smell is extremely pungent similar to that of weedkiller, said a source.

Ahmad Shokri said his son’s twin brother Muhammad Shauqi Izwan, also in the same school, did not notice anything unusual about his brother before the incident."I hope police will carry out a detailed investigation and get to the bottom of this."

Perak police chief Datuk Zulkifli Abdullah said in Ipoh that statements had been recorded from several students and teachers of the religious school."We are investigating all aspects and have classified the case as attempted murder under Section 307 of the Penal Code," he said.Zulkifli declined to elaborate but confirmed that traces of weedkiller were found in the victim’s dormitory.

State Education Committee chairman Datuk Dr Zambry Abdul Kadir, who visited the victim and his parents, advised the public not to speculate about the incident."Let the police do their job."

Brief History of Organic Farming and the National Organic Program in Western US

Brian Baker, Organic Materials Review Institute


Traditional farming practices used prior to the 20th century are generally regarded as ‘organic.’ Introduction of chemically synthesized farm inputs such as urea and DDT were criticized by scientists, philosophers, and practitioners who questioned whether the widespread adoption of such practices was sustainable. Farmers continued to practice traditional methods rather than adopt ‘progressive’ methods of chemical farming. Despite some economic disadvantages, a number of these traditional farmers remained competitive.
Organic food became established in the public’s mind as a separate identity during the 1960s and 1970s. Rachel Carson’s Silent Spring established public awareness of the ecological problems associated with agricultural chemicals in general and the use of synthetic insecticides in particular. Water pollution related to fertilizer and pesticide use and the two energy crises in the 1970s also provided incentives for farmers to reduce the use of farm chemicals. Awareness of the consequences of modern farm practices led to pesticide regulation and created growing consumer demand for food grown without ecologically destructive and toxic chemicals. Many consumers considered organic food to be one such alternative. As the market for organic foods grew, so did the need for standards, certification, and regulation. The Rodale Press established a set of voluntary standards and a certification program in 1972. Several states passed laws governing organic agriculture in the late 1970’s. Rodale was also responsible for helping to organize the establishment of California Certified Organic Farmers and Oregon-Washington Tilth Organic Producers Association in the early 1970s.
Many of the pioneers and innovators in organic agricultural research came from the Western US. California has long been the largest producing and largest consuming state for organic food. Robert Papendick, a USDA-ARS soil scientist based at Washington State University in Pullman produced the "Report and Recommendations on Organic Farming," in 1980, regarded by many as the first official recognition by USDA that organic farming was viable and warranted serious research support. Within the University of California system, Robert vandenBosch and others within the Division of Biological Control advanced ecological principles and sought to avoid use of chemical pesticides.
The farm crisis of the 1980’s brought bankruptcy and foreclosure rates not seen since the 1930’s. A few large-scale bankrupt conventional farms were still able to plant and harvest crops without using purchased inputs. At the end of a transition period, they discovered that there were buyers who would pay a premium for their crops that were ‘organic by neglect’ because of the absence of chemical inputs. These farms were possibly the first to go organic for strictly economic reasons and were of considerably larger scale than the organic farms that existed prior to their entry into the organic sector. Their market entry made the organic sector more competitive with conventional agriculture. The ability of these farmers to produce without chemical inputs, their rapid expansion of the organic market, and their obvious profitability gained the attention of other nonorganic farmers who faced financial difficulties.
As the ecological, health, and welfare consequences of conventional farming systems became increasingly apparent, organic agriculture found itself serving a growing consumer base seeking an alternative to food produced by conventional farming techniques. In 1989, Sixty Minutes broadcast a story on Alar. Overnight, the sale of organic commodities increased without any change in practices or availability of organic food. Organic farmers and their customers saw limited supply, overwhelming demand, a patchwork of inconsistent or nonexistent state laws, inadequate enforcement programs, and pervasive fraud all threatening the meaning and value of the organic label. A coalition of organic farming, consumer, animal welfare, and environmental organizations persuaded Congress to pass the Organic Foods Production Act (OFPA) in the 1990 Farm Bill.

In 1992, the USDA appointed the National Organic Standards Board (NOSB) and established the National Organic Program (NOP). Over the next five years, the NOSB and NOP convened numerous public meetings to discuss and develop a uniform set of organic standards for the US. Then, in 1997, the USDA published the first proposed NOP Rule. This first proposal did not adopt the NOSB’s recommendations, and was directly counter to the organic industry’s existing standards. The USDA received more comments on the first proposed NOP Rule than any other proposed USDA rulemaking up to that date. Practically every comment opposed the USDA adoption of the 1997 proposal as the NOP Rule. The USDA incorporated most of the NOSB’s recommendations into a final rule published on December 21, 2000. The OFPA was implemented by the NOP Rule on October 22, 2002.

Wednesday, August 29, 2007

RACUN DAN ANDA

Rosman Ahmad
Pusat Racun Negara

Keracunan menjadi salah satu perkara yang sering diperkatakan sejak akhir-akhir ini. Ia membabitkan berbagai jenis bahan kimia yang digunakan di dalam industri perkilangan, perladangan dan juga barangan rumah tangga. Ini termasuklah ubat-ubatan atau bahan pencuci sehinggalah kepada bahan-bahan semulajadi akibat gigitan haiwan atau dari sumber tumbuh-tumbuhan.
MEMAHAMI KERACUNAN
Konsep racun dan keracunan seringkali disalahtafsirkan. Ramai yang menyangka bahawa kejadian keracunan hanya membabitkan dua pihak iaitu pemberi racun dan mangsa. Kita jarang memikirkan bahawa semua benda yang kita sentuh, hidu atau makan berkemungkinan boleh menyebabkan keracunan. Bahan-bahan yang boleh menyebabkan keracunan ada di mana-mana, sama ada di rumah, tempat kerja dan kawasan persekitaran kita. Ia tidak hanya terhad kepada jenis-jenis racun yang telah dikenali seperti sianida dan plumbum.
Masyarakat perlu diberi kesedaran dan kefahaman mengenai apa itu racun, siapa yang diancam, bagaimana ia berlaku dan apakah kesannya terhadap manusia. Kesedaran ini penting supaya kita sentiasa prihatin dan bertanggungjawab.
FAKTOR UTAMA YANG MEMPENGARUHI KEJADIAN KERACUNAN
Terdapat tiga faktor utama terjadinya keracunan iaitu agen, perumah dan persekitaran. Kejadian keracunan berlaku apabila ketiga-tiga faktor ini saling bertindakbalas dan dapat dielakkan jika salah satu faktor ini dapat diasingkan.
AGEN
Agen merupakan bahan aktif atau media(biasanya kimia) yang boleh menyebabkan kecelakaan di dalam kejadian keracunan. Di antara sebab-sebab biasa keracunan ialah apabila seseorang itu terhidu gas atau asap beracun, mengambil ubat di dalam dos yang berlebihan atau meminum racun. Dalam satu-satu kes keracunan, bahan aktif dan kuantiti bahan yang terlibat boleh menentukan berbagai kemungkinan kecederaan yang akan dialami oleh mangsa.
Agen terdiri daripada bahan seperti ubat-ubatan dengan dos yang berlebihan, bahan pencuci, racun serangga, bahan kimia yang digunakan di dalam industri, di rumah atau dalam pertanian. Satu kajian menunjukkan bahawa 1/3 daripada kesemua kes keracunan yang telah dirujuk ke sebuah hospital tempatan membabitkan bahan-bahan kegunaan rumah tangga.
Bahan-bahan kegunaan rumah tangga yang sering menyebabkan keracunan
Sabun dan bahan pencuci
Sabun dan bahan pencuci biasanya menyebabkan rasa tidak selesa dan kesan terbakar pada kulit.
Kosmetik
Bedak bayi boleh menyebabkan penyakit radang paru-paru yang serius.Kebanyakan deodoran dan pewangi mengandungi alkohol yang tinggi iaitu sebanyak 90%. Ia boleh menyebabkan keracunan alkohol dalam bentuk penindasan sistem saraf pusat, jika tertelan oleh kanak-kanak.
Hidrokarbon
Banyak kes terminum minyak tanah dan lain-lain bahan petroleum secara tidak sengaja. Ini berpunca daripada penggunan botol sebagai bekas minuman.
Ubat gegat
Ubat gegat atau naftalin seakan-akan gula-gula atau coklat sering dimakan kanak-kanak.
Racun serangga
Aerosol racun serangga yang disimpan dalam tin yang tidak tahan panas dan boleh meletup.Sesetengah kanak-kanak berupaya menyembur racun dengan hanya menekan butang semburannya.
Pencil warna
Pengharaman beberapa keluaran pencil warna, krayon dan warna air kerana didapati mengandungi logam berat yang berlebihan pada awal 1995 menunjukkan keracunan boleh berlaku terhadap kanak-kanak sekolah.
Ubat-ubatan
Ubat-ubatan aspirin dan ubat selsema seperti antihistamin merupakan bahan yang biasa terdapat dirumah dalam pelbagai bentuk, saiz dan warna yang menarik seperti gula-gula atau coklat.
Makanan tercemar
Makanan yang telah dicemari oleh kuman tertentu boleh menyebabkan keracunan yang parah.
Tumbuh-tumbuhan
Tumbuh-tumbuhan banyak mengandungi bahan beracun. Contohnya seperti pokok kecubung yang banyak terdapat dipersekitaran kita. Pokok ini mengandungi racun alkaloida belladonna yang mudah diperolehi di persekitaran kita.
PERUMAH
Ia merujuk kepada individu yang terdedah kepada kemungkinan keracunan. Faktor ini merangkumi umur, jantina, kematangan fizikal dan mental serta peribadi individu. Satu kajian awal tentang kes-kes keracunan yang dirujukkan di sebuah hospital tempatan menunjukkan bahawa lebih daripada 90% melibatkan kanak-kanak berusia antara satu hingga 11 tahun. Di kalangan kumpulan kanak-kanak ini pula, 80% melibatkan kanak-kanak berusia di bawah enam tahun. Kanak-kanak dalam usia ini biasanya suka mencuba sesuatu dan mereka tidak dapat membezakan baik atau buruk. Tambahan pula kanak-kanak belum boleh membaca label dengan betul dan mempunyai interpretasi yang berbeza.
Contoh;
AMARAN:RACUN(Label sebenar)
menjadi
ARMANA:RANCU(interpretasi kanak-kanak)
Oleh itu, ibu bapa perlu prihatin terhadap situasi ini. Mereka perlu bertanggungjawab menerangkan kepada anak untuk mencegah berlakunya kejadian keracunan di rumah. Segala bahan beracun hendaklah disimpan di tempat yang selamat, berkunci dan tidak mudah dicapai oleh kanak-kanak.
Kes keracunan yang membabitkan orang dewasa agak sedikit berbanding kanak-kanak. Kebanyakannya bertujuan untuk membunuh diri. Dalam kes yang sedemikian, rawatan kesan keracunan dan psikiatri perlu diberikan kepada mangsa tersebut. Punca-punca sebenar mengapa mangsa mengambil tindakan sedemikian haruslah diselidik.
PERSEKITARAN
Rumah
Banyak kejadian keracunan berlaku di rumah, iaitu tempat di mana bahan racun disimpan. Tahap sosio ekonomi dan tekanan di dalam keluarga merupakan unsur yang meningkatkan kemungkinan keracunan berlaku kepada kanak-kanak.
Dari kajian yang telah dibuat didapati bahawa kejadian keracunan di kalangan kanak-kanak biasanya berlaku di dapur(50%), tandas(20%) dan bilik tidur(10%). Kemungkinan berlakunya pendedahan terhadap bahaya meningkat apabila ibu bapa ataupun pengasuh kanak-kanak tersebut sibuk dengan kerja masing-masing dan kurang memberi perhatian kepada anak-anak mereka. Kanak-kanak yang terminum racun menghadapi risiko bahaya yang lebih tinggi kerana organ-organ di dalam tubuh kanak-kanak seperti hati dan ginjal masih belum terbentuk dengan sempurna.
Luar rumah
Alam sekitar telah dicemari dengan berbagai jenis bahan kimia toksik sama ada daripada sumber asli atau bahan buangan industri. Agen-agen ini boleh didapati di dalam air, tanah, udara dan makanan.
Setiap tahun banyak nyawa telah terkorban akibat daripada pencemaran dan kemalangan yang melibatkan agen-agen toksik tersebut. Namun masyarakat tidak mengetahuinya kerana kebanyakan kes tersebut berlaku kepada individu ataupun satu kumpulan kecil dan tidak mendapat liputan yang meluas dari pihak media.
Bila sepatutnya anda mengesyaki anak anda mengalami keracunan?
Kanak-kanak tersebut pernah mengalami keracunan
Kanak-kanak tersebut berumur antara 1-5 tahun. Kumpulan ini mempunyai risiko yang tinggi kerana gemar memasukan benda ke dalam mulut.
Kanak-kanak tersebut sakit secara mengejut, terutama apabila dia menunjukkan tanda-tanda sawan walaupun tidak demam atau tidak sedar diri tanpa sebab tertentu.
Kanak-kanak tersebut muntah tanpa sebab tertentu
Tanda-tanda kesakitan pada beberapa bahagian badan atau organ tanpa sebab tertentu.
Nafas kanak-kanak mengeluarkan bau pelik ataupun terdapat tanda di sekitar mulut dan bibir - seperti tanah, kotoran, melepuh atau luka.
Contoh yang paling nyata ialah pencemaran udara. Agen toksik yang biasa terdapat di udara termasuklah karbon monoksida, sulfur dioksida, hidrokarbon dan nitrogen dioksida yang merupakan kesan daripada kecuaian manusia sendiri. Kenderaan bermotor merupakan faktor utama yang menyebabkan pencemaran alam sekitar.
Penyebaran agen toksik di udara bergantung kepada jarak dan lokasi daripada sumbernya (sama ada mengikut arah angin atau menentang arah angin). Pendedahan kepada agen-agen toksik yang terdapat di udara secara mendadak biasanya menimbulkan rasa tidak selesa pada sistem pernafasan. Pendedahan yang berpanjangan boleh menyebabkan penyakit yang melibatkan radang saluran pernafasan dan barah paru-paru.
Kandungan bahan buangan industri dan asap rokok, pembakaran terbuka dan petrol tanpa plumbum berterusan dalam persekitaran kita. Selain daripada bahan-bahan tersebut, penambahan agen seperti organoklorin yang kebal terhadap sistem pelupusan semulajadi adalah agak membimbangkan. Bahan kimia ini kekal dan terkumpul di persekitaran untuk jangka masa lama yang mana ia akan menimbulkan masalah terhadap kitaran makanan. Sekiranya kita gagal membentuk satu langkah keselamatan bagi menangani masalah ini dengan baik, kesihatan manusia sejagat akan terancam. Tragedi kemalangan bahan kimia dan radioaktif di Bophal, Minamata dan Chernobyl harus menjadi pengajaran kita.
Menangani masalah pencemaran persekitaran adalah satu usaha yang rumit dan memerlukan masa, tenaga dan belanja yang banyak. Beberapa langkah tertentu boleh digunakanutnuk menganalisis sesuatu situasi. Antaranya:-
Jenis racun yang terbabitBertujuan untuk mengenalkan pasti kemungkinan bahaya yang akan timbul. Mengenalpasti agen yang terlibat, sifat fizikal dan kimia, tindakblasnya dengan bahan atau agen lain, adakah ia meletup, dan tahap kekakisannya adalah penting untuk mengawal sesuatu agen toksik.
Kadar pencemaranAdalah penting untuk menentukan satu-satu kesan pencemaran bagi menganggarkan kerosakan yang bakal terjadi. Kepekatan agen toksik di dalam tanah, air dan udara perlu diukur. Keadaan geografik pada masa kejadian dan akan datang juga penting bagi mentaksirkan kesan pencemaran tersebut. Sekiranya pencemaran tersebut melibatkan agen toksik berkepekatan tinggi dan membahayakan kesihatan, persoalan berikut perlu diutarakan.
Bilangan mangsa yang terdedah kepada agen toksik tersebut?Sekiranya tiada hidupan atau manusia di kawasan pencemaran dan bahan tersebut adalah bukan untuk kegunaan pertanian, kemungkinan besar ia tidak akan mengancam kesihatan walaupun pencemaran tersebut teruk. Tetapi sekiranya pencemaran tersebut berlaku di kawasan kediaman manusia, beberapa laluan pendedahan perlu diberi perhatian; pendedahan mungkin berlaku sama ada melalui udara atau menghidu habuk, daripada tanah, debu, makanan atau minuman atau melalui kulit. Situasi ini memerlukan tindakan yang terperinci dan langkah-langkah berikut mungkin boleh membantu:-
mestilah berupaya mengenal pasti sebarang situasi yang boleh mendatangkan bahaya.
bertindak dengan segera memanggil pihak berkuasa yang berkaitan seperti Jabatan Alam Sekitar, Jabatan Kesihatan, dan Pusat Racun Negara.
jabatan tersebut mungkin berupaya untuk membantu menyelesaikan sesuatu keadaan yang kompleks dan juga membuat perancangan tentang tindakan yang perlu diambil.
Secara ringkasnya, memahami sifat sesuatu agen di persekitaran sama ada mengancam nyawa atau tidak dan persediaan awal adalah perlu untuk merawat mangsa keracunan. Insiden-insiden seperti pembuangan bahan sianida di Pulau Pangkor, pencemaran gas klorin di Ipoh dan serangan gas beracun Sarin di Tokyo seharusnya menjadikan kita lebih peka terhadap bahaya sesuatu agen

Toxic chemicals threat

By M.KRISHNAMOORTHY
krishna@thestar.com.my


KUALA LUMPUR: Some 300 unlicensed pest control companies may be exposing their customers to poisonous and toxic materials.
If the pesticides are not mixed properly, before being applied on the ground, wall, ceiling or farms, it can be dangerous to human health and cause respiratory problems, headache, stomach ache, nausea, vomiting or diarrhoea.
Pest Control Association of Malaysia (PCAM) president Ang Tan Loong said that only about 170 companies were licensed and most of them were members of the group and were trained in handling toxic chemicals.
“The unqualified and unlicensed companies will pose a threat to their clients because they are using poisonous and toxic substances without knowing how to handle them with care.
“Depending on the dosage, if toxic substances are inhaled it can even be fatal,” Ang said.
He urged the public not to use unlicensed operators and report such people to the Pesticide Board or the Department of Agriculture.
A Department of Agriculture official said enforcement officers were checking on unlicensed operators as the grace period for them to get licensed ended last year.
PCAM secretary S. Gnanasambanthan advised customers to ensure that the pest control company had the Pest Control Operator licence issued by the Pesticide Board.
To check on the validity of an operator, call PCAM at 03-9274 7288 or check with the Pesticide Board in the Department of Agriculture.

Pesticide shower poisons Beijing palace fish

August 28, 2007


BEIJING (Reuters) - Strong pesticides sprayed on trees killed around 1,000 fish at a former imperial palace in Beijing, after a sudden downpour washed the chemicals into a stream, the official Xinhua agency said on Tuesday.
"The strength of the pesticide was rather high and the shallow water in the brook failed to dilute the poison content," Xinhua quoted Zong Tianliang, spokesman for the Yuan Ming Yuan Park, as saying.
The city, which next year will host tens of thousands of foreigners during the Olympic Games next summer, regularly sprays trees with pesticides, but it was not clear if the ones used at the park were employed across Beijing.

Remove Pesticide Residues on Fruits and Vegetables when Eating

Wash Fruits and Vegetables - Why and How

Fresh produce has a natural protective coating that keeps in moisture and freshness. Whether produce comes from your garden or from the store, it should always be washed just before serving. Washing before storing produce will cause it to spoil faster.

Why does some produce, such as apples and cucumbers, arrive at the store with a wax coating? Waxes are applied to help retain moisture, which keeps the produce firm and crisp. Since the U.S. government regulates waxes for safety, they are not harmful if eaten. Waxes cannot be removed by washing. If you prefer not to consume waxes, purchase unwaxed items or peel the produce before serving.

What about pesticide residues? Recent government data shows that almost all fresh fruits and vegetables have either no pesticide residue or residues below established tolerance levels.
Here's how to wash fresh produce:

1. Before working with any foods, hands should be washed with soap and water. Also, make sure preparation areas are sanitary.

2. Under clean, running water, rub fruits and vegetables briskly with your hands to remove dirt and surface microorganisms.

3. Wash produce just before serving - not before storing, as washing will cause produce to spoil faster.

4. Produce with a firm skin or hard rind like carrots, potatoes, melons or squash may be scrubbed with a vegetable brush and water.

5. Discard the outer leaves of leafy vegetables such as lettuce and cabbage before washing.

6. Always wash squash and melons, even if you don't eat the rind or skin because when cut, dirt or bacteria that is on the outer surface can be transferred to the inner flesh.

7. DO NOT wash produce with detergent or bleach solutions. Fruits and vegetables are porous and can absorb the detergent or bleach, which is not intended for use on foods and consuming them on fruits and vegetables have the potential to make you sick.

Commercial produce sprays or washes are available in some supermarkets. These are currently being studied and in some cases may help remove some soil, surface microbes and pesticides. Extension, USDA, or FDA does not recommend these sprays or washes. No washing method completely removes or kills all microbes, which may be present on the produce. Washing produce with tap water is usually adequate. Users of commercial produce washes are advised to consider the cost of the product versus the potential benefit

Malaysia: Pesticide Poisoning

ACCIDENTAL POISONING : SELECTED ASPECTS OF ITS EPIDEMIOLOGY AND PREVENTION
John T Arokiasamy, MPH, Department of Social and Preventive Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur

Pesticides, insecticides and rodenticides are major agents of unintentional poisoning too, both directly as well as indirectly. In recent years, pesticides have caused numerous cases of poisoning, many of whom are children. Worldwide, an estimated half a million poisonings per year are said to be caused by exposure to agricultural pesticides. This occurs when pesticides are left in open containers in homes or in areas where children play.

The use of pesticides on commercial vegetable crops is often extensive in order to obtain higher yields and better returns. Indiscriminate, excessive spraying of stronger dosages of these chemicals are often resorted to achieve this end. In 1993, there were about 400 deaths due to pesticide poisoning from over 1400 reported cases, of which 45% were non-suicidal in nature. Ministry of Health figures based on government hospitals data revealed that in 1992, 138 cases of pesticide poisoning were unintentional in nature, mostly at work, with two deaths.

Elsewhere, reports of organophosphorous toxicity due to absorption through the skin has been reported. Organophosphates, found in pesticides, were commonly implicated in cases seen in Jordan with an annual mortality rate of about 35.3%.

It was also reported that 74% of the cases were among children less than 10 years. Aplastic anemia, pure red cell aplasia, leukemia, lymphoma and other hematologic disorders following exposure to the pesticide pentachlorophenol (PCP) has been reported, suggesting that exposure to chemicals that linger long in the environment can lead to mutagenic, hemolytic and carcinogenic effects.

Arsenic commonly found in insecticides, herbicides and industrial materials are involved in heavy metal poisonings and most commonly in children. A herbicide of importance in unintentional poisoning, resulting from accidental ingestion, is paraquat. A 9-year-old is reported to have been poisoned after using an empty bottle of paraquat for drinking water from a water tank.

Rodenticides too are known to give rise to poisoning. A superwarfarin compound (brodifacoum) used as a rodenticide resulted in a child being poisoned.