Direct and Selective Determination of Atmospheric Gaseous Hydrogen Peroxide by Diffusion Scrubber and 1,1‘-Oxalyldiimidazole Chemiluminescence Detection

1996 ◽  
Vol 68 (22) ◽  
pp. 3945-3950 ◽  
Author(s):  
Malin Stigbrand ◽  
Anders Karlsson ◽  
Knut Irgum
1998 ◽  
Vol 81 (2) ◽  
pp. 368-372 ◽  
Author(s):  
Hardy J Chou ◽  
Ronald L Yates

abstract A method was developed for rapid and selective determination of potential nitrosating agents at the part-per-billion level in cosmetic products. These compounds are chemically reduced to nitric oxide, which is determined by its chemiluminescent reaction with ozone. Suspended materials and colors in cosmetic products do not interfere. Hence their removal before analysis is not required. A detection limit of 33 ppb, calculated as nitrite, was obtained. No false-positive interferences were observed from antifoaming agents, several AZ-nitroso compounds, and nitrate up to 20 ppm. Among cosmetic products surveyed, potential nitrosating agents were found at levels ranging from 113 to 5021 ppb. No consistent relationship was found between levels of potential nitrosating agents and N-nitrosamines in the same products. However, the highest levels of nitrosating agents were most often associated with the highest levels of N-nitrosamines known to be present in the products.


1998 ◽  
Vol 377 (2-3) ◽  
pp. 125-131 ◽  
Author(s):  
Kei Okamura ◽  
Toshitaka Gamo ◽  
Hajime Obata ◽  
Eiichiro Nakayama ◽  
Hajime Karatani ◽  
...  

The Analyst ◽  
2018 ◽  
Vol 143 (5) ◽  
pp. 1117-1123 ◽  
Author(s):  
Hassan Y. Hijazi ◽  
Christina S. Bottaro

Water-compatible molecularly imprinted polymer films are coupled with headspace gas chromatography sulfur chemiluminescence detection (HS-GC-SCD) for the determination of thiophenes in water.


2004 ◽  
Vol 41 (9) ◽  
pp. 898-906 ◽  
Author(s):  
Shunsuke UCHIDA ◽  
Yoshiyuki SATOH ◽  
Naoya YAMASHIRO ◽  
Tomonori SATOH

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