Pesticides in the AtmosphereDistribution, Trends, and Governing Factors - Chapter 2 pdf

... 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 ... Trifluralin 2, 4-D amine Fluorescent particle 2. 4-D: Butyl ester Octyl ester Chlorpropham Study White and others, 1977 Grover and others, 1978 Maybank and others,...

Ngày tải lên: 12/08/2014, 05:21

... concentrations of atrazine, cyanazine, and alachlor in rain peaked during the spring herbicide application season in Minnesota. Glotfelty and others (1990c), and Wu (1981) found the same spring-summer behavior ... alachlor and atrazine in Maryland rain in vicinity of Wye River (adapted from Glotfelty and others, 1990~). 134 PESTICIDES IN THE ATMOSPHERE REGIN...

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... reviews and analyses of our current knowledge and understanding of pesticides in the water resources of the United States and of the principal factors that influence contamination and transport. The ... frequency and concentrations for atrazine, cyanazine, alachlor, and metolachlor in Iowa rain. 1 32 Graph showing seasonality and concentration range of al...

Ngày tải lên: 12/08/2014, 05:21

... 40 65 0 .2 73.6 1 4-4 0 50 90 12 50 6.6 0.7 22 89 35 78 5.5 1.3 1.6 3 1 50 80 21 60 15 74 2- 2 5 50 90 54 20 25 .9 22 volatilization In days 21 2 1 2. 5 2. 1 9 4 ... Glotfelty and others, 1984 Glotfelty and others, 1984 Majewski and others, 1993 Grover and others, 1988b White and others, 1977 Harper and others, 1976 Loss by...

Ngày tải lên: 12/08/2014, 05:21

... alachlor, atrazine, and 2, 4-D. Cyanazine, 2, 4-D, and 2, 4,5-T exceeded, and atrazine has been detected in several samples near the long-term exposure limit for children. In general, the very high ... ground- water systems (the ancient earthblock and the scarplands) and found that only one percent of the a- and y-HCH percolated into the shallow ground water....

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... 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

... is not included in Table 2. 4 or Figure 2. 5. In compiling the data for Figure 2. 5, all the monitoring studies that were reviewed (i.e., those listed in Tables 2. 1 and 2. 2) were included if they ... pesticides in lakes or in foreign countries are cited in the text as needed, but they are not included in Tables 2. 1, 2. 2, and 2. 3. National and multistat...

Ngày tải lên: 11/08/2014, 06:23

... 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 36 Diazinon i 17 83 i 6 94 Dieldrin 33 32 35 29 25 ... contaminants in the hydrologic system. Clearly, the monitoring studies reviewed (Tables 2. 1 and 2. 2) indicate that many pesticides are frequently found in these me...

Ngày tải lên: 11/08/2014, 06:23

... Waters 22 5 inputs during base flow in 1989 and 1990, respectively, with the remainder coming from ground water (Squillace and others, 1996). They further state that the atrazine entering the river ... increased erosion and nutrient losses (Neary and others, 1993). PESTICIDES FROM ROADWAYS AND RIGHTS-OF-WAY Pesticides used on roadways and other rights-of-way are d...

Ngày tải lên: 12/08/2014, 05:21

... Significance 27 3 and reservoirs in the region (Thurman and others, 19 92; Goolsby and Battaglin, 1993; Goolsby and others, 1993; Periera and Hostettler, 1993; Richards and Baker, 1993). In these studies, ... the endocrine systems of certain organisms, including the herbicides alachlor, atrazine, 2, 4-D, metribuzin, and trifluralin; the insecticides aldicarb, c...

Ngày tải lên: 12/08/2014, 05:21