Cyanazine degradation products

Steinheimer, T.R. and K.D. Scoggin (2001). Fate and movement of atrazine, cyanazine, metolachlor and selected degradation products in water resources of the deep Loess Hills of southwestern Iowa, USA. J. Environ. Monit., 3 126-132. 

As shown in Figure 30.6, the triazine herbicides cyanazine and prometryn have been used extensively in the Mississippi River Delta. Approximately 68% of cotton was treated with cyanazine prior to its 2002 phaseout and 40% with prometryn (Coupe et al., 1998). CAM, a major degradation product of cyanazine, occurred with the parent compound at about one-half the concentration of the parent compound, and its concentration increased relative to... 

This section discusses the occurrence of the degradation products of atrazine, cyanazine, simazine, propazine, prom-etryn, and prometon, as well as their degradation pathways from soil into surface water. More detailed discussion of triazine degradation can be found in several other chapters of this book. 

An important finding of USGS research was the occurrence of triazine herbicides in surface water. In a study by Thurman et al. (1991, 1994) measurable amounts of atrazine, the most frequently detected herbicide, occurred in 91% of the pre-planting samples, 98% of the post-planting samples, and 76% of the harvest samples. The atrazine degradation product DEA was found in many of the samples that contained atrazine. The frequency of detection or apparent order of stability of the herbicides and their degradation products is as follows atrazine, DEA, DIA, and cyanazine. This stability order is based on results of field-dissipation studies on atrazine and cyanazine (Meyer, 1994 Mills and Thurman, 1994). 

The following are examples of TLC analyses in which SFE was the method used for sample preparation lipids in wool (analysis by TLC-FID) hpids in fish feed (TLC-FID) the pesticide chlorpyrifos and its degradation products in soil hydrocarbons in heavy petroleum products (TLC-FID) aromatic and ahphatic hydroperoxides in solid matrices (online sample transfer to TLC plates) colored fractions from a Mediterranean brown alga essential oil in foods " and cyanazine from soil (silica gel TLC-densitometry at 220 nm). " ... 

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