1. Toxicokinetics of Pyrethroids in Humans: Consequences for Biological Monitoring

   • K.-H. Kühn
   • B. Wieseler
   • H. Idel

   Pages: 101 - 108

2. Method for Analyzing Urinary Toluene and Xylene by Solid-Phase Microextraction (SPME), and Its Application to Workers Using Organic Solvents

   • F. Asakawa
   • F. Jitsunari
   • T. Kitamado

   Pages: 109 - 116

3. Chromosome Aberrations Study in Human Lymphocytes from Marijuana Smokers

   • M. A. García
   • G. Weigert
   • M. Alarcón

   Pages: 117 - 121

4. Small-Scale Spatial Variation of Selenium Concentrations in Chironomid Larvae

   • J. C. Malloy
   • M. L. Meade
   • E. W. Olsen

   Pages: 122 - 129

5. Differences in Reproductive Characteristics Among Field Populations of Polycelis tenuis (Platyhelminthes) in a Metal Contaminated Stream

   • M. B. M. Indeherberg
   • G. Molenberghs
   • E. R. Schockaert

   Pages: 130 - 137

6. Fractioning of Cu, Mn, Zn, and Pb in Mineral Soils Along an Oak Forest Vegetation Gradient in Mexico City

   • A. Quiroz
   • K. Ilangovan

   Pages: 138 - 143

7. Heavy Metal Removal by Microalgae

   • L. Travieso
   • R. O. Cañizares
   • V. Valiente

   Pages: 144 - 151

8. Heavy Metals in the Shrimp Xiphopenaeus kroyeri (Heller, 1862) (Crustacea, Penaeidae) from Ubatuba Bay, São Paulo, Brazil

   • F. L. M. Mantelatto
   • W. E. P. Avelar
   • T. Shuhama

   Pages: 152 - 159

9. Copper and Lead Accumulation in Tissues of a Freshwater Fish Tilapia zillii and Its Effects on the Branchial Na,K-ATPase Activity

   • Ö. Ay
   • M. Kalay
   • M. Canli

   Pages: 160 - 168

10. Arsenic Induced Liver Hyperplasia and Kidney Fibrosis in Rainbow Trout ( Oncorhynchus mykiss) by Microinjection Technique: A Sensitive Animal Bioassay for Environmental Metal-Toxicity

    • N. Kotsanis
    • J. Iliopoulou-Georgudaki

    Pages: 169 - 178

11. Physiological and Biochemical Response of Scenedsmus obliquus to Combined Effects of Al, Ca, and Low pH

    • F. X. Kong
    • W. L. Sang
    • J. J. Li

    Pages: 179 - 186

12. Nitrate and Nitrite Accumulation in Fresh Vegetables from Greece

    • K. Fytianos
    • P. Zarogiannis

    Pages: 187 - 192

13. Effects of DDVP, Naphthalene, and Cadmium on Intestinal Proteolytic Activity in Mozambique Tilapia ( Oreochromis mossambicus Peters)

    • V. V. Kuz'mina
    • G. M. Chuiko
    • D. F. Pavlov

    Pages: 193 - 198

14. Organochlorine Pesticides in Water, Sediment, and Fish of Paranoá Lake of Brasilia, Brazil

    • E. D. Caldas
    • R. Coelho
    • S. C. Silva

    Pages: 199 - 206

15. Inhibition of Glutathione S-Transferase Catalyzed Xenobiotic Detoxication by Organotin Compounds in Tropical Marine Fish Tissues

    • S. M. Al-Ghais
    • B. Ali

    Pages: 207 - 213

16. Evaluation of Selected Endocrine Disrupting Compounds on Sex Determination in Daphnia magna Using Reduced Photoperiod and Different Feeding Rates

    • K. N. Baer
    • K. D. Owens

    Pages: 214 - 221

17. Effect of Zeolite on the Reduction of Cadmium Toxicity in Water and a Freshwater Fish, Oreochromis mossambicus

    • R. James
    • K. Sampath

    Pages: 222 - 229

18. Susceptibility of Embryonic and Larval African Catfish ( Clarias gariepinus) to Toxicants

    • L. T. H. Nguyen
    • C. R. Janssen
    • F. A. M. Volckaert

    Pages: 230 - 237