By John H. Montgomery
Very good source books are mixed to shape a unmarried entire database that provides summaries of environmental properties
The Agrochemicals and insecticides table Reference on CD-ROM includes particular information regarding 137 insecticides, serving as a primer of environmental toxicology and an in depth alternate identify index. Profiles of every pesticide provide
This CD-ROM is an up to date reference encouraged by way of the starting to be variety of examine guides and the continuing curiosity within the destiny, shipping, and remediation of unsafe ingredients. Featured are environmental and physical/chemical info on greater than three hundred compounds, together with insecticides, herbicides, and fungicides.
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1981). When heptachlor (10 ppm) in sewage sludge was incubated under anaerobic conditions at 53°C for 24 hours, complete degradation was achieved (Hill and McCarty, 1967). , 1971). Heptachlor rapidly degraded when incubated with acclimated, mixed microbial cultures under aerobic conditions. 3% of the applied dosage was removed (Leigh, 1969). Soil. Heptachlor reacted with reduced hematin forming chlordene which decomposed to hexachlorocyclopentadiene and cyclopentadiene (Baxter, 1990). The reported half-life in soil is 9–10 months (Hartley and Kidd, 1987).
Great Britain: British Crop Protection Council, 1991), 1141 p. © 2000 CRC PRESS LLC ABBREVIATIONS AND SYMBOLS Å α αa αb ≈ ACGIH ASTM asym atm b B β BCF bp C °C cal CAS CEC CERCLA CHRIS cm CL CS DOT ds dw δ EC50 et al. 15) acid dissociation constant distribution coefficient (cm) base dissociation constant distribution coefficient (cm3/g) kilogram Henry’s law constant (atm · m3/mol · K) Henry’s law constant (dimensionless) soil/sediment partition coefficient (organic carbon basis) soil/sediment partition coefficient (organic matter basis) n-octanol/water partition coefficient kilohertz kilopascal dissociation constant for water (10–14 at 25°C) less than less than or equal to liter pound lethal concentration necessary to kill 50% of the aquatic species tested lethal concentration necessary to kill 100% of the aquatic species tested lethal dose necessary to kill 50% of the mammals tested lower explosive limit meter meta (as in m-dichlorobenzene) molarity (moles/liter) mass milliequivalents milligram minute(s) milliliter mass of sorbed solute millimeters of mercury millimole mole melting point mass of solute in solution millivolt normality (equivalents/liter) normal (as in n-propyl, N-nitroso) effective porosity nanogram National Institute for Occupational Safety and Health nanometer ortho (as in o-dichlorobenzene) Occupational Safety and Health Administration specific density (unitless) © 2000 CRC PRESS LLC pP Pa pair PEL pH pKa pKb pKw ppb ppm P-t1/2 pv QSAR R Ra Rb RCRA Rd Rf RTECS S Sa SARA secSo Sw sp.
Benson et al. (1971) reported a degradation yield of 99% when an acetone solution containing heptachlor epoxide was photolyzed at >300 nm for 11 hours. An identical degradation yield was achieved in only 60 minutes when the UV wavelength was reduced to >290 nm. © 2000 CRC PRESS LLC Graham et al. 3% degradation was achieved. In powdered form, however, only 5 days were required for complete degradation to occur. Chemical/Physical. Heptachlor epoxide will hydrolyze via nucleophilic attack at the epoxide moiety forming heptachlor diol which may undergo further hydrolysis forming heptachlor triol and hydrogen chloride (Kollig, 1993).
Agrochemicals Desk Reference by John H. Montgomery