The Application in Water Determination of WE-TNGC2007 Total Nitrogen on-site or on-line Automatic Monitoring Instrument
Nitrogen compounds were the main contaminants in natural water, and the measurement and on-site automatic monitoring of total nitrogen in lakes and rivers which might be polluted by nitrogen were the important tasks for environmental engineers. A new and rapid instrumental technique has been developed to measure organic and inorganic nitrogen compounds in both ground water and contaminated source water. Conceived as a replacement for normal procedures which were measured in two different wavelengths (220 and 275nm) by digesting with potassium persulfate spectrophotometric method, this on-site or on-line monitoring instrumental system measures total nitrogen by digestion with UV-alkaline potassium persulfate and reduction with hydrazine sulphate spectrophotometric method in the single wavelength of 546nm and yields relative standard deviation (RSD) of reproducibility 0.7％, zero drift 2.7％, range drift 2.2％, linearity error 0.87％, mean time between failures (MTBF) more than 1440 hours. When applied in water samples determination, the average absolute values of relative error (A) of different water samples were less than ±10％ and had a well reproducibility.
total total nitrogen on-site monitoring automatic instrumental system WE-TN-GC2007
Dongxu Chen Jie Ding
School of Chemistry and Chemical Engineering, Inner Mongolia University Inner Mongolia University Ho Environmental and Chemical department, Inner Mongolia Electric Science&Research Institute Inner Mong
国际会议
上海
英文
2870-2873
2008-05-16（万方平台首次上网日期，不代表论文的发表时间）