Pesticides study

Table 5.2 Selected-reaction monitoring (SRM) transitions nsed for MS-MS detection of the pesticides studied in the systematic investigations on APCI-MS signal response dependence on eluent flow rate. Reprinted from J. Chro-matogr.. A, 937, Asperger, A., Efer, J., Koal, T. and Enge-wald, W., On the signal response of various pesticides in electrospray and atmospheric pressure chemical ionization depending on the flow rate of eluent applied in liquid chromatography-mass spectrometry , 65-72, Copyright (2001), with permission from Elsevier Science...

EPA. 1972. The pollution potential in pesticide manufacturing. U.S. Environmental Protection Agency, Office of Water Products. Pesticide Study Series 5. EPA540/11-72-06. 

Pesticide Classes Pesticides Studied % Mutagens Observed... 

U.S. Environ. Prot. Agency Pesticide Study Series (1972)... 

It should be noted that hydrolysis of these pesticides is expected to occur simultaneously with volatilization for the pesticides studied (Table I). Over a 7 day experiment, however, only malathion and mevlnphos would be expected to hydrolyze to a significant extent. We determined the loss rate of mevlnphos to be 0.0016 0.0002 hr l (tjj = 18 days), and of malathion to be 0.011 0.001 hr-1 (t j = 2.6 days) at 22 2°C, at pH 8.2+0.2 for a model evaporation pond by daily sampling of duplicate pesticide solu-Xlons (covered to prevent volatilization) for 7 days and plotting log concentration versus time. For both of these pesticides, then, degradation was a much more important route of pesticide loss from water than volatilization. The relatively slow loss rate of the other pesticides could not be determined in our 7 day... 

Hayes WJ Jr Organic phosphorus pesticides. In Pesticides Studied in Man, pp 358-359. Baltimore, MD, Williams Wilkins, 1982... 

Before starting to draft the report, consider who the final users will be and adapt the presentation accordingly. Requirements and expectations differ between regulatory authorities. Some authorities have their own reporting formats. For instance, the EPA provides report templates for pesticide studies (1), and the FDA provides templates for food studies (2). A report format initially produced for one authority, such as the OECD, may prove to be unsuitable for subsequent submission to another authority, such as the EPA. Therefore, it is very important to know in advance all of the authorities to which the report will be submitted. Once the final report has been issued it cannot be modified except by amendment, which is very difficult to do for formatting changes. 

USEPA (2008) Templates for use in developing pesticide study documents. http //www. epa.gov/ oppOOOO 1 / regulating/ studyprofile templates/index.htm. Accessed 16 Sep 2011... 

Demeton, or Systox, was one of the most interesting and challenging pesticides studied. Demeton consists of two isomers, Demeton-S and Demeton-0. The vapor pressures of both isomers are reported to be nearly the same. When gas chromatographed, the isomers are completely resolved and easily quantitated separately. 

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