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1. Trichlorphon, dichlorvos and chlorpyrifos were not founded in the surface water.

2. The US EPA classification indicates that chlorpyrifos shows no evidence of carcinogenicity.

3. Chlorpyrifos was one kind of organophosphorus pesticides with higher efficacy and could substitute highly poisonous metham-sodium and parathion .

4. Chlorpyrifos is one of the leading causes of acute insecticide poisoning in the US, according to the US Environmental Protection Agency ( EPA ).

5. Objective To examine sexual differences in organophosphate pesticide chlorpyrifos (CHP)- induced hypothermia in the rat and the relationship with gonadal function.

6. The degradation trends of cypermethrin, fenvalerate, chlorpyrifos and chlorothalonil in autumn spinach were studied under open-field condition by spraying.

7. In addition, chlorpyrifos was detected in different tissues or organs of Carassius auratus and Eriocheir sinensis, in which chlorpyrifos enriched easily in liver and gill.

8. Objective To test virulence of compound of Chlorpyrifos and Fendona against Blattella germanica in laboratory.

9. Adsorption of chlorpyrifos on humic acid (HA) of neutral purple soil was studied through balance vibration method.

10. Chlorpyrifos is by far the most widely applied organophosphate insecticide, and its toxicity to human and organism has been paid more and more attention.

11. Diazinon and chlorpyrifos, too, were eventually revealed to be hazardous.

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12. Chlorpyrifos and other insecticide OPs are inhibitors of anticholinesterase , an enzyme vital to the nervous systems of animals and humans.

13. Chlorpyrifos and diazinon (see above), along with many related toxic pesticides, are still used widely on food crops.

14. Penetrative properties and speed acknowledged in the light of the chlorpyrifos in some different controlled time.

15. According to"environmental safety evaluation test guidelines of chemical pesticides"of China, chlorpyrifos was highly toxic to Carassius auratus and Eriocheir sinensis.

16. At the condition of recommended dose, the processing factors of washing, blanching and drying for chlorpyrifos in the whole cabbage were 0.

17. And on this basis, carried out the Ecological Risk Assessment. of chlorpyrifos on silkworm.

18. The results of host egg exposure showed that imidacloprid, triazophos, fipronil and chlorpyrifos were all badly detrimental to adult survival, parasitism capacity(F0)and adult emergence(F1).

19. Potassium ferrate (VI) could effectively eliminate dichlorvos, dimethoate and chlorpyrifos residues in spinach.

20. No inhibition was found on respiration of soil microbe in chlorpyrifos and fenpropathrin treatments, showing that both insecticides belong to low poisonous chemicals to soil microbe.

21. Conclusion This method is sensitive, accurate, able to eliminate the interferences and suitable for determination of trace chlorpyrifos in water.

22. Results The half lethal dose(LD50) and the half knock-down time(KT50) of compound of Chlorpyrifos and Fendona were close to or less than on using separately.

23. Once they were shown to be toxic, pesticides like diazinon and chlorpyrifos—both of which affect the nervous system—took their place.

24. The surge in export sales and domestic sales agents of rapid growth, but also for the production of chlorpyrifos added catalyst.