Chlorothalonil, determination

Ferrer and Barcelo [394] used sobd-phase extraction coupled with LC-MS to determine diuron, irgalol, and chlorothalonil in seawater in amounts down to lng/l. 

Figure 15.13 Comprehensive two-dimensional GC chromatogram of a supercritical fluid extract of spiked human serum. Peak identification is as follows 1, dicamba 2, trifluralin 3, dichloran 4, phorate 5, pentachlorophenol 6, atrazine 7, fonofos 8, diazinon 9, chlorothalonil 10, terbufos 11, alachlor 12, matalaxyl 13, malathion 14, metalochlor 15, DCPA 16, captan 17, folpet 18, heptadecanoic acid. Adapted from Analytical Chemistry, 66, Z. Liu et al., Comprehensive two-dimensional gas chromatography for the fast separation and determination of pesticides extracted from human serum , pp. 3086-3092, copyright 1994, with permission from the American Chemical Society.

In the first test, conducted in July under hot and relatively dry conditions, the grass was cut to 5 cm and raked prior to application of the chlorpyrifos/ chlorothalonil mixture. Deposition rates were determined by strategic placement of 10-cm X 10-cm cotton gauze coupons backed with aluminum foil. The test plot was allowed to dry for 4 h before sampling. The mean transfer efficiencies for chlorpyrifos were 2.37 ng/m (0.087%) for the PUF roller and 1.05 ng/m (0.039%) for the drag sled. The transfer efficiencies were much higher for... 

Salau, J. S., Alonso, R., Batllo, G., and Barcelo, D., Application of solid-phase disk extraction followed by gas and liquid-chromatography for the simultaneous determination of the fungicides — captan, captafol, carbendazim, chlorothalonil, ethirimol, folpet, metalaxyl, and vinclozolin in environmental waters. Anal. Chim. Acta, 293, 109-117, 1994. 

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