The QuEChERS method for Pesticide Residue Testing

The QuEChERS method is a multi-class, multi-residue method that can analyze for more than 100 pesticides, including the pyrethroids, in a variety of matrices. The method is called “QuEChERS” which stand for Quick, Easy, Cheap, Effective, Rugged and Safe. It is developed to avoid all time consuming step, to be cheap etc. The cost of … Read more

The GT test Kit for testing pesticide residues

The GT Test Kit was invented by Gobthong Thoophom (GT) from the Public Health Ministry. It is a Cholinesterase Inhibition Technique, which detects organophosphororus pesticides and carbamates. The instrumentation is uncomplicated and consists of low-technology items. Modified warm water tray (box, sockets, light bulbs, tray) Thermometer Plastic dropper Test tubes Aquarium pump Plastic bottles Glass … Read more

Introduction to Pesticide Residue Testing

In Thailand a number of laboratories are involved in the detection of pesticide residues in food. Several of these laboratories are involved in procedures that lead to the marketing of food under various "safe" labels. Most of the analysis is done with a so-called GT-test kit, developed by Gobthong Thoophom from the Public Health Ministry, … Read more

Chemical Families of Pesticides and their Health Effects

Each pesticide generally belongs to a chemical family on which general health effects are known. Organophosphates: disturbs the peripheral nervous system (long acting) Carbamates: disturbs the peripheral nervous system (short acting) Organochlorines: disturbs the central nervous system (long acting) Pyrethroids: irritant to eyes, skin, and respiratory tract Thiocarbamates: irritant to eyes, skin, and respiratory tract … Read more

Conclusions on pesticide-health surveys

(November 2002) Two farmer groups (vegetable growers in Kanchanaburi, mango growers in Phitsanulok) conducted pesticide-health surveys in their own community. The results are presented on these pages: Introduction to the pesticide-health surveys Survey of Kanchanaburi vegetable growers Survey of Phitsanulok mango growers Farmers’ opinion After conducting the surveys, the farmers concluded that the results from … Read more

Survey by mango growers in Phitsanulok

(November 2002) In Noenmaprong village (Phitsanulok province), a group of 11 mango growers were trained to conduct cross-sectional survey. These trained farmers observed and interviewed 20 other mango farmers in their community. Then they met several times to analyze the results, which are presented below. Analysis of pesticides used Among the 20 farmers 17 different … Read more

Survey by vegetable growers in Kanchanaburi

(November 2002) Trained farmers of Nongkrang village (Boproy, Kanchanaburi province) observed and interviewed 19 other vegetable farmers in their community. After these interviews were completed they met several times to analyze the results, which are presented here. Analysis of pesticides used Among the 19 farmers they found that 52 different brands of pesticides were being … Read more

Pesticides and Farmers’ Health

Most Thai farmers rely heavily on the use of synthetic pesticides. Although most of them know that these pesticides are dangerous chemicals that can be hazardous to their health they seem to ignore this and handle the chemicals as if they were quite harmless. This has created a very serious problem in rural areas where … Read more

Classification of pesticides

Knowledge about a certain pesticide often starts by learning how it is classified. Pesticides can be classified or grouped in many different ways. Try answering the following questions: Which pests does it control? Insecticides (insects) Fungicides (fungi) Bactericides (bacteria) Herbicides (weeds) Acaricides, miticides (mites) Rodenticides (rodents) What is the source? Synthetic pesticides (chemicals manufactured by … Read more