Arsenic contamination in the water source is found that news has continued both in the country and abroad. Contamination resulting from both natural and human action itself. When a man receives large quantities of arsenic can cause acute symptoms, such as diarrhea, vomiting, blurry, hazy, or intoxication, etc, but if you get a small amount and there are long periods of time can cause symptoms such as chronic toxic effects on the skin. Cancer and death, all this. Study and research on arsenic contamination has been interested in the study of issues that impact health occurs. Troubleshooting contamination and develop methods of analysis However, the measures to prevent and resolve serious should receive cooperation from all sides. October news report is 2551 found arsenic contamination in water resources southern China until the symptoms occur make citizens face swelling. Vomiting and blurry as hundreds of people The management of the waste water treatment plant pond smelt steel is not effective. When a massive storm making waste water spills to environment and community (1), sections in Bangladesh found in groundwater that is used is consumed arsenic contamination exceeding the standard. Mineral resources that are caused by bacteria in the large quantities of arsenic are contaminated and wash down into the groundwater. In addition, Cambodia. Argentina, Mexico and Chile Viet Nam Tibet North of the United States, it found arsenic contamination in the ground water is high (2), (3) Countries, Thailand also found arsenic contamination in water in arsenic contaminated 2534 that Ron phibun district, Nakhon SI thammarat, which is caused by the mining of Tin, which is contaminated with arsenic minerals derived. In the process of separating minerals. Arsenic ore will be extracted along with the tail and be left without proper management. Thus, arsenic contamination of water sources to the neighboring community (2), and when the year 2549 at Suphanburi. Arsenic contamination in surface water standards very high. By that token has been people in the area noticed that some arsenic contamination was found in the urine. This may be caused by contamination by old mining management nature, and that it is not appropriate. (4) Arsenic is a natural substance found in soil as an element. Rocks and minerals found in the copper, lead, manganese ore, Tin wire, silver and gold (2) in the area of the underground water source near mineral line so there is high arsenic contamination, which is considered to be natural contamination. Contamination by the action section of the mine management is not appropriate, such as in the case of Ron phibun district, tin mining, etc. However, it has several useful arsenic example is a component of pest control substances. Herbicide Wood treatment substance mixed with lead in batteries to increase performance. Another element for many types of mixed with the glaze in a digital clock or use Light Emitting Diode to mix (LED), which are pieces of electronics equipment, one of the khotnit (2), (5) Human beings have a chance to get all the exposure arsenic skin. Breathing mist containing arsenic dust or fumes of arsenic and eating or drinking contaminated water. Typically, the human body will eliminate arsenic in a small amount of potassium within a period of two days, but if you receive only 130 mg of arsenic in quantity to make the intestines and the liver is destroyed. Green and yellow are vomiting, diarrhea, severe inebriation and delirium to life. If I receive a small amount and there are long periods of several years to cause disease, poisonous arsenic or silicon, Nicholas r ruea osmosis. (Arsenicosis) starts from the skin symptoms are irritation, until there is a thick, and sides. Dark skin color is changed to black, as the Palm of the hand and foot until the big black dot become skin cancer bladder cancer kidney cancer, lung cancer, as well as affect the cardiovascular system and the nervous system, until it finally died (2) The World Health Organization defines quality water for consumption of arsenic contamination should not exceed 0.01 milligrams per liter or 10 Phi Phi Beach (6), (7) while Thailand pollution control Department defined countries provide surface water quality that will be consumed through a preliminary treatment and disinfection, then. Arsenic contamination must be no more than 0.01 milligrams per liter (8) groundwater quality standards, but to the quality of drinking water consumed in a sealed container of water products and industry standards, arsenic contamination is right up to 0.05 mg per liter. (9), (10) in addition, arsenic is not a primary substance, it must have the necessary analysis and methods of analysis must be used according to the standard device called Atomic Absorption (8) is very expensive. It takes a long time, and there are only a few places in the country or in Thailand using field measurements of arsenic, it is expensive and difficult. Make the surveillance of contamination in drinking water is filled with difficulty. จากปัญหาดังกล่าว ทำให้หน่วยงานในประเทศไทยให้ความสนใจกันมากขึ้น โดยมีงานวิจัยที่สำคัญเช่น การศึกษาผลการได้รับสารหนูในหญิงตั้งครรภ์ต่อการแสดงออกของยีนส์ต่างๆของทารก ที่อาจมีผลต่อการเกิดโรคต่างๆ รวมถึงโรคมะเร็งในภายหลัง ของสถาบันวิจัยจุฬาภรณ์ (11) การพัฒนาชุดตรวจวิเคราะห์สารหนูชนิดพกพา ของมหาวิทยาลัยมหิดล เพื่อให้มีความรวดเร็วในการวิเคราะห์และประหยัดค่าใช้จ่าย (12) นอกจากนี้ยังมีงานวิจัยเรื่องการกำจัดสารหนูในน้ำด้วยการเพิ่มออกซิเจนลงในน้ำ (13) หรือการตกตะกอนสารหนูด้วยการเติมคลอรีนและสารประกอบเหล็กคลอไรด์ (FeCl3) (14) ซึ่งจะเป็นประโยชน์ต่อการป้องกันอันตรายจากสารหนูในน้ำดื่มได้มากขึ้น อย่างไรก็ตาม มาตรการในการควบคุมพื้นที่ที่มีการปนเปื้อน และมาตรการเฝ้าระวังพื้นที่เสี่ยงที่อาจมีการปนเปื้อนสารหนู ยังคงต้องศึกษาวิจัย และพัฒนาให้ทันสมัยและเหมาะสมอย่างสม่ำเสมอ
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