Comparison and Inspiration of Standard Detection Methods for Ammonia in the Air of Workplaces Between China and the United States
In order to solve the problems exposed by the standard detection method for ammonia in the air of current domestic workplaces(sampling with absorbing solution-analysis with Nessler reagent spectrophotometry)in practical application.Based on literature analysis,the development history of detection methods for ammonia in workplace air in China and the U-nited States is reviewed,and the advantages and disadvantages of this standard detection method in China and the United States are compared and analyzed,so as to provide enlightenment and reference for the update of standard detection methods in China.The results show that the sampling and determination methods for ammonia in the air of workplaces in China(sam-pling with absorbing solution-analysis with Nessler reagent spectrophotometry)have some shortcomings,such as not suitable for long-distance transportation,not suitable for individual sampling,poor sample stability,use of highly toxic reagents and cumbersome operation.For the solid adsorbent tubes,at present,there are some shortcomings in the domestic market,such as high background of impurity element,poor sampling performance and stability,and not suitable for collecting ammonia in the air.And there are problems in foreign market that the costs of enterprises regularly occupational health evaluations and testing are relatively high.Therefore,it is necessary to develop solid adsorbent tubes suitable for ammonia collection in the air of workplaces in China,which is beneficial to promote the update of standard methods for airborne ammonia collection in workplace,and provide convenience for enterprises and occupational health evaluation and testing workers.
NETL
NSTL
万方数据
维普
