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Polymorphism of N-acetyltransferase 2 (NAT2) Gene Polymorphism in Shanghai population: Occupational and Non-occupational Bladder Cancer Patient Groups 被引量:13
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作者 QING-WENMA GUO-FANGLIN +4 位作者 JI-GANGCHEN CUI-QINGXIANG WEI-CHAOGUO KLAUSGOLKA JIAN-HUASHEN 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2004年第3期291-298,共8页
Objective Arylamine N-acetyltransferases (NATs) are involved in the detoxification of aromatic amines and hydrazine. In order to explore the possible association of NAT2 polymorphism with bladder cancer risk in benzi... Objective Arylamine N-acetyltransferases (NATs) are involved in the detoxification of aromatic amines and hydrazine. In order to explore the possible association of NAT2 polymorphism with bladder cancer risk in benzidine exposed or non-exposed Chinese individuals, healthy subjects, subjects with bladder cancer of a former benzidine exposed cohort in Shanghai dyestuff industry and a group of bladder cancer patients without known occupational exposure to aromatic amines were genotyped for NAT2 gene polymorphism. Methods NAT2 genotyping was performed with a set of RFLP procedures at seven major polymorphic loci of gene coding area: G191A, C282T, T341C, C481T, G590A, A803G and G857A. Results The wild allele NAT2 *4 was the most prevalent allele (59%) in healthy individuals. The alleles NAT2*6A and NAT2*7B were also frequently observed (21% and 17%, respectively). In contrast to Caucasians, the percentage of slow acetylators was lower (12% in Chinese vs. 58% in Caucasians, P<0.001). No relevant differences were observed for homogenous rapid, heterogeneous rapid/slow and homogeneous slow acetylation genotypes between the healthy subjects and both groups of bladder cancer patients. Conclusion The present work did not support the association of slow acetylating genotypes of NAT2 gene with elevated risk of bladder cancer in Chinese whereas it was documented as an important genetically determined risk factor in Caucasians. Different mechanisms might play a role in individual susceptibility to bladder cancer related with aromatic amine exposure in various races or ethnic groups. 展开更多
关键词 BENZIDINE Occupational exposure N-Acetyltransferase 2 POLYMORPHISM Bladder cancer Dyestuff industry
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Plasma Induced Degradation of Benzidine in Aqueous Solution 被引量:1
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作者 高锦章 盖克 +1 位作者 杨武 董彦杰 《Plasma Science and Technology》 SCIE EI CAS CSCD 2003年第5期1983-1986,共4页
The degradation of benzidine in aqueous solution by the low temperature plasma was examined. The results showed that the concentration of medium and the value of pH have an appreciable effect on the degradation of ben... The degradation of benzidine in aqueous solution by the low temperature plasma was examined. The results showed that the concentration of medium and the value of pH have an appreciable effect on the degradation of benzidine. What is more important is that iron ions acting as a catalyst play an important role in this reaction. For exploring the degradation mechanism of benzidine, some of the intermediate products were recorded by HPLC(high performance liquid chromatography). 展开更多
关键词 low temperature plasma BENZIDINE POLLUTANTS degradation.
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Preparation and Properties of BiOI with High Sorption Capacity 被引量:1
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作者 YANG Zhuwei ZHANG Jingjing +2 位作者 ZHANG Xinyue WANG Linshan CHAO Lei 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2020年第3期620-628,共9页
BiOI nanosheets with high sorption capacity were successfully prepared by the simple hydrothermal method followed by calcination. The features of the as-obtained BiOI nanosheets were characterized by X-ray diffraction... BiOI nanosheets with high sorption capacity were successfully prepared by the simple hydrothermal method followed by calcination. The features of the as-obtained BiOI nanosheets were characterized by X-ray diffraction (XRD), Fourier transform infrared spectra (FT-IR), thermogravimetric analysis (TGA), scanning electron microscopy (SEM) and specific surface area analyzer (BET). BiOI was used as an adsorbent to explore its sorption properties of benzidine by changing initial concentration, pH and time. Results showed that BiOI had high sorption activity for benzidine, and it was found that the BiOI in this paper exhibited higher sorption capacity than traditional BiOI, which could be mainly attributed to the large specific surface area of the sample and the existence of unsaturated sites in the sample. Meanwhile, the optimal sorption conditions were explored, the actual maximum sorption capacity of BiOI could reach 66.67 mg/g. In addition, the synthesized sample's reusability without obvious deterioration in performance was demonstrated by five cycles. The sorption process was in accordance with the Langmuir model and the pseudo-second-order kinetic model. 展开更多
关键词 BiOI H3BTC SORPTION BENZIDINE
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Evaluation of Uncertainty for Detecting the Content of Banned Aromatic Amines in Textile Products by GC-MS 被引量:1
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作者 傅科杰 李峥嵘 +2 位作者 杨力生 闵洁 叶洪淼 《Journal of Donghua University(English Edition)》 EI CAS 2006年第3期14-18,共5页
The article evaluated the uncertainty of the content of banned aromatic amines in textile products in terms of GB/ T17592. 1 - 1998 Textiles-test Method of Banned Azo Coloumnts-gas Chromatography/Mass Spectrometric Me... The article evaluated the uncertainty of the content of banned aromatic amines in textile products in terms of GB/ T17592. 1 - 1998 Textiles-test Method of Banned Azo Coloumnts-gas Chromatography/Mass Spectrometric Method, analyzed and quantified the uncertainty components which affected the measurement results. Through calculation, the uncertainty of the sample mainly came from Co standard uncertainty, weighing, uncertainty of volmne, effect on the recovery rate of sample during the course of extraction and purification and ucertainty from the random effect during the course of measurement. It was obtained that the expanded uncertainties of the content of 2 - naphthylamine, benzidine and 2, 4 - diaminotoluenc with higher frequency in 24 kinds of forbidden aromatic amines were respectively 2. 128, 2.302 and 4.778 mg/kg. 展开更多
关键词 UNCERTAINTY GC-MS 2 - naphthylamine BENZIDINE 2 4- diaminotoluene.
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A Study on 4,4′-Diaminobenzene Sulfonanilide(DABSA) and the Properties of Dyes Derived from DABSA
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作者 WU Zu-Wang 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2001年第1期77-87,共11页
A single crystal of 4,4′ diaminobenzene sulfonanilide(DABSA) was determined by X ray diffraction method. It is shown that the two benzene rings are non planar with an angle of 55 1°. Owing to the non planar... A single crystal of 4,4′ diaminobenzene sulfonanilide(DABSA) was determined by X ray diffraction method. It is shown that the two benzene rings are non planar with an angle of 55 1°. Owing to the non planar configuration, the dyes derived from DABSA possess a lower substantivity on fiber but better permeability in substrate, the color of these azo dyes could be matched by two individual azo dyes locating on both sides of the DABSA molecule. 展开更多
关键词 Diaminobenzene sulfonanilide Configuration X ray diffraction Non carcinogenic substituent for benzidine Substantivity of dye Azo hydrazone tautomers
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Explanation of Tautomerism and Isomerization in Terms of the Magnetic Field
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作者 Aibassov Yerkin Yemelyanova Valentina +4 位作者 Tussupbayev Nessipbay Shakieva Tatyana Yerzhanova Zhadyra Bulenbayev Maxat Blagikh Evgeniy 《Journal of Chemistry and Chemical Engineering》 2016年第2期96-98,共3页
A study of the influence of magnetic field on the tautomerism, the authors proposed a new method for predicting possible new intra- and intermolecular rearrangements due to tautomerism. The authors have proposed a gen... A study of the influence of magnetic field on the tautomerism, the authors proposed a new method for predicting possible new intra- and intermolecular rearrangements due to tautomerism. The authors have proposed a general mechanism of possible rearrangements and tautomerism. 展开更多
关键词 TAUTOMERISM ISOMERISM benzidine rearrangement magnetic field.
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Magnetic Effects in Brain Chemistry
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作者 Aibassov Yerkin Yemelyanova Valentina +4 位作者 Tussupbayev Nessipbay Shakieva Tatyana Yerzhanova Zhadyra Bulenbayev Maxat Blagikh Evgeniy 《Journal of Chemistry and Chemical Engineering》 2016年第2期103-108,共6页
Abstract: Chemistry of the human brain has two components--the basic chemistry common to all mammals and chemistry of thinking inherent to man. The authors proposed a mechanism of induction and thermodynamic features... Abstract: Chemistry of the human brain has two components--the basic chemistry common to all mammals and chemistry of thinking inherent to man. The authors proposed a mechanism of induction and thermodynamic features of the brain. The authors offered the mechanisms of the work RAM (physical) and permanent (chemical), the brain's memory, including the model of nonlocal quantum correlations. 展开更多
关键词 BRAIN ISOMERISM benzidine rearrangement magnetic field.
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Spectrophotometric Determination of Kelthane in Environmental Samples
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作者 Etesh K. Janghel Y. Pervez 《American Journal of Analytical Chemistry》 2011年第6期726-730,共5页
Sensitive spectrophotometric method for determination of kelthane in sub parts per million level is described, which is based on Fujiwara reaction. Kelthane on alkaline hydrolysis gives chloroform, which can be reacte... Sensitive spectrophotometric method for determination of kelthane in sub parts per million level is described, which is based on Fujiwara reaction. Kelthane on alkaline hydrolysis gives chloroform, which can be reacted with pyridine to produce red colour. The colour is discharged by addition of glacial acetic acid. Then Benzidine (4,4’-Bianiline) reagent is added due to which a yellowish-red colour is formed which has an absorption maximum at 490nm. Beer’s law is obeyed in the range of 3.3 - 26.0 μg (0.13 - 1.04 ppm) of Kelthane per 25ml of final solution. The molar absorptivity and Sandell’s sensitivity were found to be 4.32 × 105 L?mol–1?cm–1 and 0.022 μg?cm–2 respectively. The method is found to be free from interferences of other organochlorine pesticides and various co-pollutants and can be successfully applied for the determination of kelthane in environmental samples. 展开更多
关键词 SPECTROPHOTOMETRY Kelthane ACARICIDE BENZIDINE ENVIRONMENTAL SAMPLES
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