CAJ | 학술논문

探索了氯化氰(CNCl)气体在不同介质中的稳定性和可吸收性，及光度测定条件，方法用于三聚氯氰工厂烟道气、车间空气及厂区空气中CNCl含量的测定。结果满意。
탐색료록화청(CNCl)기체재불동개질중적은정성화가흡수성，급광도측정조건，방법용우삼취록청공엄연도기、차간공기급엄구공기중CNCl함량적측정。결과만의。
We report a spectrophotometic method for the determination of cyanogen chloride (CNCl) in air pollution.Experimental parameters for the stability and absorbility of CNCl gas in the different media were studied.The experimental conditions were optimized for CNCI as follows:absorbent:1%isonicotinic acid-barbituric acid;reaction acidity:pH 5.8 in phosphate buffer at room temperature;masking agent:0.01mol/L EDTA;λmax:598nm. The apparent molar absorptivity was found to be 1.17×105L·mol-1·cm-1,the linear range was within 0～5μg of CNCl in 25 mL solution; the regression equation of the curve has given by A=-0.0040+1.935C(r=0.9999).The method has been applied to the determination of CNCl in chimney gas,workshop air and production area air of the cyanuric trichloride plant,chemical works and pharmaceutical factory air.The relative standard deviation was below 2.7%(n=4)for the cyanogen chloride amount within 13～64mg/m3,and when CNCl amounts were within 0.1～1.0mg/m3,RSD was below 6.9%(n=6).The recovery was 98.7%.