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Indoor air analysis and comparison of the detection method of ammonia

Comparison of measurement accuracy, stability,[link widoczny dla zalogowanych], suitable for the determination of ammonia in higher levels of indoor air environment. \Table 4: Table 3 indophenol blue spectrophotometric method can be seen from Table 3, the color of time 45rain after the indophenol blue spectrophotometric absorbance value stable. As can be seen from Table 4, the color of time 10min, Nessler spectrophotometric absorbance value stable. So Nessler reagent method than the indophenol blue color time is short, simple and quick operation, can greatly improve the detection efficiency. 2.3 Comparison of the safety Nessler spectrophotometric because of toxic reagents used in experiments HgC12,[link widoczny dla zalogowanych], Nessler toxic, very corrosive to the skin, in the experiment have a greater risk; another experiment mercury in the waste could easily lead to environmental pollution,[link widoczny dla zalogowanych], the health of nearby residents have some harmful. In contrast, indophenol blue spectrophotometry safety and better environmental protection. , Above, indophenol blue spectrophotometric measurement accuracy, stability, and for the determination of low levels of ammonia in indoor air environment, and safety, environmental protection and good; Nessler spectrophotometric method for determination of indoor air higher levels of ammonia in the environment, and the quick and easy, but the use of Nessler's reagent is toxic, easy to cause environmental pollution. References [1] Cao Shouren. Indoor air pollution, and determination of [M]. Beijing: China Environmental Science Press,[link widoczny dla zalogowanych], 1998. [2] Zhang Furui. Environment and health. Shijiazhuang: Hebei People's Publishing House ,1980.63-67. [3] Chinese National Standards. Civil engineering indoor environmental pollution control, (GB50325-2001). Administration of Quality Supervision, Inspection and Quarantine jointly issued by Ministry of Construction. [4] Chinese National Standards. Determination of ammonia in the air in public places method, (GB/r18204.25-2000). National Quality and Technical Supervision issued. Author: Hou Shuping, male, assistant engineer. Company: Shandong Construction Engineering Quality Supervision and Testing Center. Address: Jinan City, Shandong Province 250031, 29 groups of mountain. Sun Xiuping, Yuan Lian Po. Shandong Construction Engineering Quality Supervision and Testing Center (Jinan 250031). Received :2008-05 A O9 (on the next page 7 Cool

3 has detected the existence of other claims officer in the sample analysis requirements specification \chromatographic methods of analysis \The problem is this statement: After chromatographic analysis of the process is the activation process of the pipe, the pipe will be analyzed to sampling, the state has changed, so have not sampled before the peak of the background meaningless. Has detected that an increase in personnel requirements of the sampling tube is not only to regulate the rigor of argument, did not affect the testing work, this argument is incomplete. Increase the sampling tube is not conducive to the requirements of the work in the background to avoid detection due to random error, is a better argument. I found work in the detection of a TVOC project far exceeded by the 1h sampling tubes could be detected after activation of a larger case of high boiling point impurities, according to the 2001 edition due to sampling error detection can not be ignored. 4 Conclusion GB50325-2001 {civil engineering indoor environmental pollution control} (2006) version of the sampling tube to increase the requirements are not very strict, in practice the non-activation of the regulatory requirements sometimes 30min impurities can not be, taking into account the large amount of testing work possible problems tight, uniform activation conditions with and without sampling tube sampling tubes and sampling tubes for the analysis is not, according to its peak to determine whether the effects can be ignored. Proved the accuracy of this approach is scientific, while improving work efficiency. References [1] GB50325-2001 (2006 Edition) \About the author: Sun Xiuping,[link widoczny dla zalogowanych], female, engineer. Company: Shandong Construction Engineering Quality Supervision and Testing Center. Address: 250031, Jinan, 29 groups of mountain. Zhaoping Jun, Haiyang Construction Engineering Quality Supervision Station (Haiyang 265100). Liu Xifeng, Cao Bang, Shandong Provincial Construction Engineering Quality Supervision and Testing Center (Jinan 250031). Received :2008-03-21

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