peak represents either sinigrin itself or an other impurity from the sample overlapping with sinigrin. So it is evident, that glucotropaeolin is a better internal standard than sinigrin for the determination of glucosinolate content of oilseed rape by HPLC. HPLC methods will only detect intact gluco
Screening of trihalomethanes by direct aqueous injection using electron capture detection
β Scribed by Carmichael, Duncan ;Holmes, William
- Publisher
- John Wiley and Sons
- Year
- 1990
- Tongue
- English
- Weight
- 263 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0935-6304
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β¦ Synopsis
Abstract
The disinfection of drinking water with chlorine produces carcinogenic byβproducts called trihalomethanes or (THM's). These compounds are formed when the chlorine reacts with the organic matter in the raw water. The four major THM's are chloroform, bromodichloromethane, dibromochromethane, and bromoform. Direct aqueous injection is used for the rapid screening THM's and other volatile organic compounds (VOC's) in water by direct on column injection of the water sample in to wide bore capillary columns, to which is attached an electron capture detector.
π SIMILAR VOLUMES
Direct aqueous injection with electron-capture detection (DAI-ECD) is of increasing interest for the determination of halocarbons in water in the 0.01-10 ppb range. It is particularly useful for very volatile halocarbons that may be obscured by a solvent or by solvent byproducts in the course of det