Determination of Nitrosodipropylamine in Chemical Industrial Wastewater by Gas Chromatography-Mass Spec-troscopy Coupled With the Purge and Trap Method
- VernacularTitle:化工废水中N-亚硝基二正丙胺的吹扫捕集-GC-MS测定法
- Author:
Mingwen ZHONG
;
Huadong SHENG
;
Mingjuan JIN
- Publication Type:Journal Article
- Keywords:
Purge and trap;
Gas chromatography-mass spectroscopy;
Nitrosodipropylamine;
Wastewater,chemical industry
- From:
Journal of Environment and Health
1993;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To establish a method for the simple and rapid extraction and detection of nitrosodipropulamine(NDPA).Methods NDPA at levels of?g /L grade in chemical industrial wastewater was enriched efficiently using the purge and trap(P&T)method with a Trap3tube under the standard program,including the flow rate of purge gas(40ml/min),the time of purge(11min),the temperature of desorb(225℃),the time of desorb(4min),the temperature of bake(230℃)and the time of bake(10min).The NDPA concentrations were determined by gas chromatography-mass spectroscopy(GC-MS )and chemical ionization(CI )and select ion mode(uSIS)coupled with the purge and trap(P&T)(P&T/GC-MS/CI /uSIS)method Results The detection limit,recovery rates and relative standard deviation(RSD)of the method were3?g /L,62.60%-96.31%and7.5%respectively.The linearity of method was good in the5-30?g /L range with the correlation coefficient 0.978.Conclusion The P&T/GC-MS/CI /uSIS method could be used to detect semi-volatile NDPA in chemical industrial wastewater.
