Results 131 to 140 of about 2,220 (156)
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[Non-volatile nitrosamines in some foods from Linxian County].
Zhonghua zhong liu za zhi [Chinese journal of oncology], 1992For the incidence of non-volatile nitrosamines in the staple foods and vegetables, corn, millet, turnip and turnip chips collected from Linxian County Henan Province, a high incidence area of esophageal cancer, were collected, analyzed and compared with the foods from Huairou County Beijing, a low risk area.
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Chromatographia, 1994
A sensitive precolumn fluorescence derivatization method for low level detection of the, volatile (N-nitrosodimethylamine and N-nitrosopyrrolidine) and non-volatile N-nitrosamines (N-nitrosoproline and N-nitrosodiethanolamine) an high-performance liquid chromatography was developed. This method is based on the denitrosation of the compounds of interest
Z. Y. Zhou +3 more
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A sensitive precolumn fluorescence derivatization method for low level detection of the, volatile (N-nitrosodimethylamine and N-nitrosopyrrolidine) and non-volatile N-nitrosamines (N-nitrosoproline and N-nitrosodiethanolamine) an high-performance liquid chromatography was developed. This method is based on the denitrosation of the compounds of interest
Z. Y. Zhou +3 more
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Journal of Chromatography A, 1989
A method is described for the determination of non-volatile N-nitrosamines in baby bottle rubber nipples and pacifiers. It consists of extraction of the sample with dichloromethane in the presence of ascorbyl palmitate (an inhibitor of artifactual formation of nitrosamines), clean-up on silica or basic alumina, and final analysis by high-performance ...
N P, Sen, S W, Seaman, S C, Kushwaha
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A method is described for the determination of non-volatile N-nitrosamines in baby bottle rubber nipples and pacifiers. It consists of extraction of the sample with dichloromethane in the presence of ascorbyl palmitate (an inhibitor of artifactual formation of nitrosamines), clean-up on silica or basic alumina, and final analysis by high-performance ...
N P, Sen, S W, Seaman, S C, Kushwaha
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Journal of Chromatography A, 1994
Abstract Interest in the analysis of non-volatile N-nitrosamines has recently been renewed due to the development of several new reversed-phase HPLC interfaces to thermal energy analysis (TEA) or chemiluminescence detection. A new application of a counter flow gas diffusion cell (CFGDC)-based particle beam LC interface (Universal Interface, Vestec ...
Stanley M. Billedeau +3 more
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Abstract Interest in the analysis of non-volatile N-nitrosamines has recently been renewed due to the development of several new reversed-phase HPLC interfaces to thermal energy analysis (TEA) or chemiluminescence detection. A new application of a counter flow gas diffusion cell (CFGDC)-based particle beam LC interface (Universal Interface, Vestec ...
Stanley M. Billedeau +3 more
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Analytica Chimica Acta, 1993
Abstract The behaviour of an on-line post-column reactor system based on the use of Ce(IV) reagent in acidic medium for the liquid chromatographic amperometric determination of non-volatile nitrosamines has been investigated in a two-line flow manifold coupled with a flow-through voltammetric detector equipped with twin gold electrodes for both mono-
FAVARO, GABRIELLA +3 more
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Abstract The behaviour of an on-line post-column reactor system based on the use of Ce(IV) reagent in acidic medium for the liquid chromatographic amperometric determination of non-volatile nitrosamines has been investigated in a two-line flow manifold coupled with a flow-through voltammetric detector equipped with twin gold electrodes for both mono-
FAVARO, GABRIELLA +3 more
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Further studies on the occurrence of volatile and non-volatile nitrosamines in foods.
IARC scientific publications, 1981Approximately 250 samples of various foods, such as cured meat products, fried bacon, cooked-out bacon fats, baby foods containing meats, tomato products, cooked pizza, powdered and evaporated milk, mushrooms and different varieties of alcoholic beverages, were analysed by GLC-TEA for the presence of volatile nitrosamines.
N P, Sen, S, Seaman, M, McPherson
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IARC scientific publications, 1983
Methods are described for the rapid screening of various foods for the presence of nitrosamino acids (mainly NPRO and NSAR) and of hydroxylated nitrosamines (mainly BHBN, NHPYR and NDELA). Rapid screening methods (HPLC-TEA and GC-TEA) are also described for the determination of the above mentioned nitrosamines in human urine.
N P, Sen, S, Seaman, L, Tessier
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Methods are described for the rapid screening of various foods for the presence of nitrosamino acids (mainly NPRO and NSAR) and of hydroxylated nitrosamines (mainly BHBN, NHPYR and NDELA). Rapid screening methods (HPLC-TEA and GC-TEA) are also described for the determination of the above mentioned nitrosamines in human urine.
N P, Sen, S, Seaman, L, Tessier
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A Survey of Methods for the Determination of Non-Volatile Nitrosamines in Foods
Pure and Applied Chemistry, 1979openaire +1 more source