PESTICIDES IN SURFACE WATERS: Distribution, Trends, and Governing Factors - Chapter 2 pdf

... 6- 177 1-1 42 no data z V) Median 30 6 no data C . - - Study Duration (months) n Range 1-1 50 1-1 32 1-7 2 2 0 Median 12 12 12 rn - - - - I - - I - - Surface ... detections 0 0 0 0 0 0 nr 18 24 0 6 6 12 18 0 0 Number samples 33 33 33 33 33 33 -1 21 -1 21 42 -1...

Ngày tải lên: 12/08/2014, 05:21

... by CRC Press, LLC Factors Controlling the Behavior and Fate of Pesticides in Surface Waters 22 5 inputs during base flow in 1989 and 1990, respectively, with the remainder coming from ground water ... slope and © 1998 by CRC Press, LLC Factors Controlling the Behavior and Fate of Pesticides in Surface Waters 22 7 into the system such as strong wind-induced curr...

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... 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 ... dibromide (EDB), and glyphosate-were not included in any of the reviewed studies listed in Tables 2. 1 and 2. 2. Of these five, only glyphosate (Figure 3. 12) and end...

Ngày tải lên: 12/08/2014, 05:21

... 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 I ... 1 02 -* * I I I 3 Ciba-Geigv, 1992a I Atrazine in the Mississippi River, near Baton Rouge-St. Atrazine in Chesapeake Bay. Atrazine in surface...

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... Topics-Sources, Behavior, and Transport 23 7 Reservoirs I I I I - A - - - - - - - April-May June-July August- October- September November " March-April May-June October- November ... ~~II~II~~~~~~~~~~~~I~~~~I~~~~I~~~~I~~~~ - Thiobencarb - - 0 .2 - - 0.1 - 0 30 10 20 30 9 19 29 9 19 May June July © 1998 by CRC...

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... according to three main categories: national and multistate monitoring studies, state and local monitoring studies, and process and matrix distribution studies. Within each of Tables 2. 1, 2. 2, and ... pesticide analytes investigated in the studies listed in Tables 2. 1, 2. 2, and 2. 3 are classified into six pesticide groups: organochlorine insecticides, organophosphate...

Ngày tải lên: 11/08/2014, 06:23

... 19 26 42 27 31 DDD, p , p ′ - 46 4 50 43 2 55 DDE, p , p ′ - 44 124 4 4011 49 DDT 2 23 40 38 16 33 51 DDT, p , p ′ - 49 4 47 44 2 53 DDT, total 55 23 23 52 12 ... in Tiers 1–3 are quite different for DDT (23 percent in Tier 1, 40 percent in Tier 2, and 38 percent in Tier 3), than for p,p′-DDT (49 percent in Tier 1, 4 percent...

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... Continued Study no. 25 26 27 Study Yates and others, 1978 Christensen and others, 1979 Bidleman and Christensen, 1979 Comments Single line-source; fixed-wing aircraft and helicopter ... LLC N Table 2. 2. Characteristics and summaries of pesticide process and matrix distribution studies Continued m Study no. 21 22 23 24 Comments Incorporated to 2. 5 cm...

Ngày tải lên: 12/08/2014, 05:21

... chlordane in the marine and estuarine environments of the United States; by Mearns and others (1988), which reviews PCB and organochlorine insecticide contamination of fish and shellfish in the marine and ... data from the monitoring studies in Tables 2. 1 and 2. 2 3 .2 Total number of sites and samples, and corresponding aggregate detection frequencies (in percent)...

Ngày tải lên: 11/08/2014, 06:23

... 57 46 0 59 2, 526 46 53 37 0 Isodrin 54 28 17 0 530 28 6 0 Isopropalin nr nr nr nr Kepone nr 28 nr 0 nr 28 nr 0 Lindane 22 798 1,065 81 0 3 17 0 48 2, 753 2, 823 82 0 1 19 0 Linuron 22 0 79 0 Malathion ... 14,868 44 ,26 3 Percent of total herbicide use: 52. 2 39.9 18.0 11 .2 8.8 31 .2 34.5 OTHER HERBICIDES Trifluralin 4 0.74 5 .23 11.43 28 .33 27 . 12 23 28 483 547 •••••• Pend...

Ngày tải lên: 11/08/2014, 06:23