2005, ISBN: 9781234530280

Rarebooksclub.com. Paperback. New. This item is printed on demand. Paperback. 34 pages. Original publisher: Reston, Va. : U. S. Dept. of the Interior, U. S. Geological Survey, 2005. OCL… More...

Rarebooksclub.com. Paperback. New. This item is printed on demand. Paperback. 34 pages. Original publisher: Reston, Va. : U. S. Dept. of the Interior, U. S. Geological Survey, 2005. OCLC Number: (OCoLC)245161387 Subject: Herbicides -- Environmental aspects -- Middle West. Excerpt: . . . 10 Summary of Significant Results From Studies of Triazine Herbicides and Their Degradation Products 100 49 94 CANADA 88 North Dakota Minnesota Michigan Wisconsin South Dakota 43 Michigan 82 Nebraska Iowa Illinois Ohio Kansas Figure 7. Location of wells in the Indiana U. S. Geological Survey Midwestern 37 Missouri ground-water monitoring network sampled during 1991 - 94 ( from Kolpin and Base from U. S. Geological Survey digital data 1: 2, 000, 000, 1972 0 100 200 MILES Albers Equal Area Conic Projection others, 1995 ). Standard Parallels 39 30 and 43 30 , central meridian-90 30 0 100 200 KILOMETERS Table 4. Summary of analytical results for triazine herbicides and their degradation products in ground-water samples collected from wells in the Midwestern United States during 1991 - 93 ( from Kolpin and others, 1993b, 1994; Kolpin and Thurman, 1995 ). g L, micrograms per liter; NA, not applicable 1991 1992 1993 Maximum Maximum Maximum Percentage Reporting Percentage Reporting Percentage Reporting Triazine compound concen-concen-concen-of limit of limit of limit tration tration tration detection ( g L ) detection ( g L ) detection ( g L ) ( g L ) ( g L ) ( g L ) Parent compound Atrazine 20. 8 2. 1 0. 05 43. 0 1. 0 0. 005 23. 6 1. 8 0. 05 Cyanazine 1. 3. 68. 05 3. 0. 02. 008 3. 6. 88. 05 Simazine 1. 6. 27. 05 13. 0. 07. 005 NA NA NA Degradation product Cyanazine amide NA NA NA 9. 3. 55. 05 NA NA NA Deethylatrazine 21. 4 2. 3. 05 31. 0 1. 8. 015 23. 6 1. 7. 05 Deisopropylatrazine 7. 6 1. 2. 05 18. 0. 28. 05 13. 6. 48. 05 As shown in table 4, cyanazine amide was detected in atrazine, cyanazine, and simazine also can degrade to deisopro-9. 3 percent of the samples with a maximum concentration of pylatrazine. The dealkylation of simazine to deisopropylatra. . . This item ships from La Vergne,TN., Rarebooksclub.com<

2005, ISBN: 9781234530280

RareBooksClub. Paperback. New. This item is printed on demand. Paperback. 34 pages. Original publisher: Reston, Va. : U. S. Dept. of the Interior, U. S. Geological Survey, 2005. OCLC Nu… More...

RareBooksClub. Paperback. New. This item is printed on demand. Paperback. 34 pages. Original publisher: Reston, Va. : U. S. Dept. of the Interior, U. S. Geological Survey, 2005. OCLC Number: (OCoLC)245161387 Subject: Herbicides -- Environmental aspects -- Middle West. Excerpt: . . . 10 Summary of Significant Results From Studies of Triazine Herbicides and Their Degradation Products 100 49 94 CANADA 88 North Dakota Minnesota Michigan Wisconsin South Dakota 43 Michigan 82 Nebraska Iowa Illinois Ohio Kansas Figure 7. Location of wells in the Indiana U. S. Geological Survey Midwestern 37 Missouri ground-water monitoring network sampled during 1991 - 94 ( from Kolpin and Base from U. S. Geological Survey digital data 1: 2, 000, 000, 1972 0 100 200 MILES Albers Equal Area Conic Projection others, 1995 ). Standard Parallels 39 30 and 43 30 , central meridian-90 30 0 100 200 KILOMETERS Table 4. Summary of analytical results for triazine herbicides and their degradation products in ground-water samples collected from wells in the Midwestern United States during 1991 - 93 ( from Kolpin and others, 1993b, 1994; Kolpin and Thurman, 1995 ). g L, micrograms per liter; NA, not applicable 1991 1992 1993 Maximum Maximum Maximum Percentage Reporting Percentage Reporting Percentage Reporting Triazine compound concen-concen-concen-of limit of limit of limit tration tration tration detection ( g L ) detection ( g L ) detection ( g L ) ( g L ) ( g L ) ( g L ) Parent compound Atrazine 20. 8 2. 1 0. 05 43. 0 1. 0 0. 005 23. 6 1. 8 0. 05 Cyanazine 1. 3. 68. 05 3. 0. 02. 008 3. 6. 88. 05 Simazine 1. 6. 27. 05 13. 0. 07. 005 NA NA NA Degradation product Cyanazine amide NA NA NA 9. 3. 55. 05 NA NA NA Deethylatrazine 21. 4 2. 3. 05 31. 0 1. 8. 015 23. 6 1. 7. 05 Deisopropylatrazine 7. 6 1. 2. 05 18. 0. 28. 05 13. 6. 48. 05 As shown in table 4, cyanazine amide was detected in atrazine, cyanazine, and simazine also can degrade to deisopro-9. 3 percent of the samples with a maximum concentration of pylatrazine. The dealkylation of simazine to deisopropylatra. . . This item ships from La Vergne,TN., RareBooksClub<