ENVIRONMENTAL SCIENCE & TECHNOLOGY 1999 Vol.33 No.7

1..The Use of Treatment Wetlands for Petroleum Industry effluents∥Robert　 　 L.Knight..-p973 2..Seasonal and Annual Load of Herbicides from the Mississippi River　Basin 　 to the Gulf of Mexico∥G.M.Clark..-p981 3..Particle Sze and Chemical Control of Heavy Metals in Bed Sediment from　 　 the Rouge River， Southeast Michigan∥Kent S.Murray..-p987 4..Production of Nitrite from the Photodegradation of Dissolved Organic　　 　 Matter in Natural Waters∥Robert J.Kieber..-p993 5..Methylmercury Content of　Eggs　in　Yellow　Perch　Related　to　Maternal 　 exposure in Four Wisconsin Lakes∥Chad R.Hammerschmidt..-p999 6..Extractable Organohalogens (EOX) in Sediment and Biota Collected at an　 　 Estuarine Marsh near a Former Chloralkali Facility∥Kurunthachalam　　　 　 Kannan..-p1004 7.Estrogenic Alkylphenols in Fish Tissues， Sediments， and Waters from　the 　 U.K.Tyne and Tees Estuaries∥C.M.Lye..-p1009 8..Iron Porphyrin and Cysteine Mediated Reduction of Ten Polyhalogenated　 　 Methanes in Homogeneous Aqueous Solution: Product Analyses and 　 Mechanistic Considerations∥Johanna Buschamann..-p1015 9..Field and Laboratory Studies of Carbon Tetrachloride Transformation in　 　 a Sandy Aquifer under Sulfate Reducing Conditions∥J.F.Devlin..-p1021 10..Secondary Organic Aerosol Formation vs Primary Organic Aerosol emission: 　 In Situ Evidence for the Chemical Coupling between Monoterpene　Acidic 　 Photooxidation Products and New Particle Formation over Forests∥ Ilias 　 G.Kavouras..-p1028 11..De　Novo　Synthesis　Mechanism　of　Polychlorinated　Dibenzofurans　from 　 Polycyclic Aromatic Hydrocarbons and the Charactoristic Isomers of　　　 　 Polychlorinated Naphthalenes∥F.Iino..-p1038 12..Epigenetic Toxicity of a Mixture of Polycyclic Aromatic Hydrocarbons　on 　 Gap Junctional Intercellular Communication Before and After 　 Biodegradation∥Subhasis Ghoshal..-p1044 13..Immobilization or Recovery of Chlorinated Hydrocarbons from 　 Contaminated Groundwater Using Clathrate Hydrates: A Proof-of-Concept∥ 　 Jagannadha R.Bontha..-p1051 14..Field-Proven Strategies　for　Reducing　Volatile　Organic　Carbons　from 　 Hardwood Drying∥Wei Su.-p1056 15..Mineralization of 2，4- and 2，6-Dinitrotoluene in Soil Slurries ∥Shirley 　 F.Nishino..-p1060 16..Anaerobic Biotransformation of 2，4-Dinitrotoluene and 2，6 　 -Dinitrotoluene　by　CLOSTRIDIUM　ACETOBUTYLICUM:　 A　Pathway　through 　 Dihydroxylamino Intermediates∥Joseph B.Hughes..-p1065 17..Photocatalytic Degradation　of Some Methyl Perfluoroalkyl Ethers on　　 　 TiO↓2Particles in Air: The dependence on the Dark-Adsorption， the　　　 　 Products， and the Implication for a Possible Tropospheric Sink ∥ Shuzo 　 Kutsuna..-p1071 18..Abiotic and Biological Transformation of Tetraalkoxysilanes and 　 Trichloroethene/CIS-1，2-Dichloroethene Cometabolism Driven by　 　 Tetrabutoxysilane-Degrading∥Microorganisms∥Sanjay Vancheeswaran..-p1077 19..The Lasagna Technology for In Situ Soil Remediation.　1.　　Small　Field 　 Test∥Sa V.Ho..-p1086 20..The Lasagna Technology for In Situ Soil Remediation.　 2.　　Large　Field 　 Test∥Sa V.Ho..-p1092 21..Use of Mioaugmentation To Stimulate Complete Reductive Dechlorination　 　 of Trichloroethene in Dover Soil Columns∥Mark R.Harkness..-p1100 22..Municipal Solid Waste Incineration Bottom Ash: Characterization and　　 　 Kinetic Studies of Organic Matter∥S.Dugenest..-p1110 23..Formal Uncertainty Analyssi of a Lagrangian Photochemical Air　Pollution 　 Model∥Michelle S.Bergin..-p1116 24..Optical Teledetection of Chlorophyll a in Turbid Inland Waters∥Herma J.Gons..-p1127 25