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| Investigation on Influencing Factors for Determination of Ammonia Nitrogen in Water with Nessler Reagent |
| Received:August 29, 2016 Revised:December 10, 2016 |
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| DOI：doi:10.3969/j.issn.2095-1035.2017.02.007 |
| KeyWord:nessler reagent; ammonia nitrogen; samples of water ;influence factor |
| Author | Institution |
| WANG Yugong |
国土资源部 兰州矿产资源监督检测中心，兰州 |
| LA Maoji |
国土资源部 兰州矿产资源监督检测中心，兰州 |
| ZHANG Rong |
国土资源部 兰州矿产资源监督检测中心，兰州 |
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| Abstract: |
| The testing conditions for the determination of ammonia nitrogen in water, which are described in the national drinking water standard test method (GB/T5750—2006), were studied. The testing conditions included the collection and preservation of samples, the various factors that could influence the coloring and the blank value. Some appropriate solutions to resolve the problems caused by above factors were recommended. Verification experiments were conducted on national standard materials as well as real samples, and the results showed that the relative deviation of the method was between 0.03%～1.5% and the relative standard deviation of the method was between 0.55% and 5.3%. The accuracy can meet the analysis requirement. This method can supplement national standard method and provide reference to practical works. |
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