The Examination and Estimation of the Performance Characteristics of a Standard Method for Organo-Chlorine Insecticides and PCB
As early as 1880, following a report of the Government Water Examiner, the Council of the Society of Public Analysts invited members to send results of water analysis on a monthly basis. To make the results comparable, instructions on the methods of analysis were sent to all the analysts involved and were also given in the Analyst in 1881. This was particularly important since at the time no small measure of controversy existed, particularly over the determination of the organic purity of water supplies. It is reported that the Water Committee of the Society advised that results be expressed in grains per gallon since “the reports in many cases pass into the hands of those to whom a statement in parts per 100,000 is more or less unintelligible” (Chirnside and Hamence, 1974). One cannot but ponder on the reaction to results in parts per thousand million (μg/1) or indeed parts per million million (ng/1) which form the basis of this paper. These methods of water analysis were not supported by any collaborative studies but were the subject of much discussion by the members.
KeywordsRiver Water Spike Level Sewage Effluent Reporting Integrator Organochlorine Insecticide
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