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sirljz(金币+10):谢谢交流，这个认真看了一下感觉翻译的不错 2010-04-12 15:06
hibye(金币+100, 翻译EPI+1):谢谢！ 2010-04-14 19:49
in recent years,with the development of the industry, a variety of production and living waste water has been sent directly into the water without the permission of the national standard ,which causes that the majority of residents drinking water has been contaminated seriously.Basically,water quality testing is in the step of the field sampling and laboratory analysis,but because of the complicated laboratory analysis and long experimental period,it is difficult to meet production and market demand.The subject of this test supply a new melthod for the rapid measurement of the new site testing. the invention of the rapid detection of water tank makes it to Water quality field sampling and on-site determination,which functions as rapid measurement of a number of indicators of water quality, grasping the dynamic changes of water environment and preventing accidents,etc
the way of the rapid determination of chloride in water is avaliable in this experiment. rapid detection of chloride pipe has been made up in the Application of Mohr and the preparation of silica gel adsorption principle,the best test tube silicone silver chromate test program has been determined through the method of selection, and single factor experiments.Under the optimum conditions,the detection limit is 5mg / L, coefficient of variation ranges from 2.1% to 6.3%, recoveries range from 82.5% ~ 108.9%. in comprison with GB,there is no significant systematic error, the percent of the RSD is less than 5.5%, it only takes 10min to complete the testing of samples.
the way of the rapid determination of sulphate in water is avaliable in this experiment.the best material ratio has been determined by orthogonal test,the temperature has also been considered, the results have nothing with pH, iron ion and chloride.The detection limit is 100 mg/L,coefficient of variation ranges from 2.1% to 6.3%, recoveries range from 82.5% ~ 106.6%.the study of Phenanthroline spectrophotometry in testing the total iron in drinking water has been improved.also,the Sensitivity has been developed by adding Surfactant PEG20000.in consideration of the single factor,combining with on-site rapid detection of the characteristics of rapid detection,the total iron can be tested out in 5min,the detection limit is 0.1mg/L,the recovery is 92.6％~103.8％.
the choice of test items reagents, reagent ratio, production technology and other factors has been exploreed in the test,in view of these factors,the best plan is determined.evaluating the detection of the test box project performance,compared with GB5749-2006 "drinking water health standards",the detection limit is much lower,Repeatability is greater than 92%, Standard deviation is 0.65% -4.4%,coefficient of variation is 0.1% to 5.7%,and the recovery is 86.5%～108.9%。testing the Interference of common ions in water and testing water samples using Self-made test tube,compared with GB methold,Accuracy is larger than 94%. |
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