PESTICIDES IN SURFACE WATERS: Distribution, Trends, and Governing Factors - Chapter 6 pdf

... the triazines and acetanilides, including the high-use compounds 2,4-D, dicamba, butylate, and trifluralin, were never detected in surface waters at levels exceeding criteria values in the reviewed ... national and state drinking, surface, and ground water monitoring programs recognize the metabolite issue, and begin looking for parents plus metabolites in samples, the...

Ngày tải lên: 12/08/2014, 05:21

... limit(s) 0.00 2-0 .01 0.00 2-0 .01 0.00 2-0 .01 0.075 0.00 2-0 .01 0.00 2-0 .0 1 0.075 0.025 Numbe of site: 96 96 96 96 96 96 96 96 96 Percent of sites with detection 74 46 44 39 ... 2-Chl0r 0-2 ' ,6& apos ;- diethylacetan. 2-Hydroxy-2 &apos ;6 &apos ;- diethylacetan. Carbofuran Cyanazine Cyanazine- amide Deet...

Ngày tải lên: 12/08/2014, 05:21

... CHAPTER 4 Factors Controlling the Behavior and Fate of Pesticides in Surface Waters 4.1 SOURCES OF PESTICIDES TO SURFACE WATERS INTRODUCTION As discussed in Section 3.3, pesticides ... by CRC Press, LLC Factors Controlling the Behavior and Fate of Pesticides in Surface Waters 225 inputs during base flow in 1989 and 1990, respectively, with the remaind...

Ngày tải lên: 12/08/2014, 05:21

... Mississippi, Missouri, and Ohio Rivers, 197 5-9 1 - - - - - - . I I I 4 95 Ciba-Geigy, 1992e Ciba-Geigy, 1994a I Atrazine in surface waters of Iowa, 197 5-9 3. d 4 4 18 Ciba-Geigy, 1992f ... 102 -* * I I I 3 Ciba-Geigv, 1992a I Atrazine in the Mississippi River, near Baton Rouge-St. Atrazine in Chesapeake Bay. Atrazine in...

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... Topics-Sources, Behavior, and Transport 237 Reservoirs I I I I - A - - - - - - - April-May June-July August- October- September November " March-April May-June October- November ... atrazine into, within, and out of a reservoir. Crossland and others (19 86) examined the behavior of two pesticides- methyl parathion and pentachlorophenol...

Ngày tải lên: 12/08/2014, 05:21

... β -, and δ -chlordene, and chlordene. 7 Based on 1 in 100,000 cancer risk. 8 Applies to sum of cis - and trans- chlordane, cis - and trans- nonachlor, and oxychlordane. HCH, ... 1983), including the single study in Tier 1. The remaining pesticides in Table 6. 7 do not have sufficient sediment quality guidelines available to determ...

Ngày tải lên: 11/08/2014, 06:23

... National Contaminant Biomonitoring Program) and in estuarine mollusks (NOAA’s National Status and Trends Program) in 19 86, shown in relation to 1 966 agricultural use of aldrin plus dieldrin by farm ... chlordane in the marine and estuarine environments of the United States; by Mearns and others (1988), which reviews PCB and organochlorine insecticide contamination of fis...

Ngày tải lên: 11/08/2014, 06:23

... organisms. Other invertebrates and mollusks placed a distant second and third, respectively, in state and local monitoring studies and in process studies. In national and multistate monitoring studies, ... conducted in each decade by study type. The NMPFF was not included in compiling data for these figures for the reasons given above. In Figure 2 .6, national and multi...

Ngày tải lên: 11/08/2014, 06:23

... 86 4,198 3,988 3,185 167 68 85 90 86 DDMS, p , p ′ - nr 61 nr 0 nr 66 nr 0 DDMU, p , p ′ - or total 28 9 61 4 100 18 28 nr 66 4 nr 17 DDT, o , p ′ - 23 80 262 ... 0 Chlordene, hydroxy- nr 31 nr 0 75 39 17 0 Chlordene, α - nr 61 nr 3 nr 66 nr 3 Chlordene, γ - nr 61 nr 5 nr 66 nr 5 Chlorobenzilate nr nr nr nr Chlorpyrifos 571...

Ngày tải lên: 11/08/2014, 06:23

... the Ottawa River (Norstrom and others, 19 76) ; organochlorine compounds in micro- and macro- zooplankton off the Northumberland coast (Robinson and others, 1 967 ); pesticides and PCBs in periphyton, green ... concentrations in aquatic biota were observed to increase with increasing trophic levels. In a Long Island (New York) salt marsh, DDT residues in marine organisms i...

Ngày tải lên: 11/08/2014, 06:23