water hardness testing Articles
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Cyst-Based Toxicity Tests. - XIII. Development Of A Short Chronic Sediment Toxicity Test With The Ostracod Crustacean Heterocypris incongruens. Methodology And Precision
Abstract: Experiments have been carried out with neonates of the freshwater ostracodHeterocypris incongruensto verify and complete former choices of test parameters for a new culture/maintenance free solid phase microbiotest for freshwater sediments. From the trials with increasing volumes of reference sediment, it was concluded that 300 µL was the most appropriate amount of sediment to be ...
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Toxicity of fluoride to aquatic species and evaluation of toxicity modifying factors
A study was performed to investigate the toxicity of fluoride to a variety of freshwater aquatic organisms and to establish whether water quality variables contribute substantively to modifying its toxicity. Water hardness, chloride and alkalinity were tested as possible toxicity modifying factors for fluoride using acute toxicity tests with Hyalella azteca and Oncorhynchus mykiss. Chloride ...
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Acute Toxicity Tests with Streptocephalus Proboscideus (Crustacea / Branchipoda / Anostraca) : Influence of Selected Environmental Conditions
Abstract : The influence of selected environmental conditions on the acute toxicity of 3 selected chemicals (K2Cr2O7, CuSO4and Na pentachlorophenate) to instar II-III larvae ofStreptocephalus proboscideuswas evaluated. Mortality after a 24 h incubation was used as effect criterion. Factorial experiments were set up resulting to 25 different combinations of temperature and water hardness. The ...
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