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Keywords Aluminite powder;Fish flesh;Trichloro biphenyl;Pentachloro biphenyl; 铝粉;鱼肉;三氯联苯;五氯联苯;
Determination of fish flesh trichloro biphenyl and pentachloro biphenyl in fast solvent extraction-gas phase chromatography 快速溶剂萃取-气相色谱法测定鱼肉中三氯联苯和五氯联苯
Trichloro biphenyl 三氯联苯
Sodium biphenyl, 20%w/w solution in diethylene gl... 询价联苯钠(20%25溶于二乙二醇二乙醚)；
This is Hong Kong finds out the trichloro cyanamide material for the first time from milk system food. 这是香港首次从奶制食品中查出三氯氰胺物质。
The quantitative analysis of dihydrosafrole, by gas chromatography on 2% DEGS packed column and using biphenyl as internal standard, was introducced. 采用DEGS为固定液、联苯为内标物,用气相色谱法测定二氢黄樟油中二氢黄樟素的含量。
BACKGROUND & AIM: To study effects of polychlorinated biphenyl PCB126 on B(a)P-induced genotoxicity. 背景与目的:探讨多氯联苯126(PCB126)对苯并(a)芘[B(a)P]遗传毒性的影响。
We observe photophysical and electrochemistry property of biphenyl imide by substitutent group effect. 藉由取代基效应观察化合物光物理性质及电化学特性的改变。
Intramolecular photoinduced charge transfer can be efficiency by restricting biphenyl group to make it more conjugate. 藉由分子结构的限制，使联苯间的共轭性质变好，使分子内能有效的产生光致电荷转移。
Methods:A new synthesis route for felbinac preparation was studied with biphenyl under ultrasound. 方法:以联苯为原料,在超声催化作用下合成新药联苯乙酸。
Then they can be further recrystallized to produce biphenyl with a purity of over 99.9%. 进一步用溶剂结晶法去除了联苯中的杂质;获得99.;9%25以上联苯。
Fine Chemical and Hi-Tech Products : Organic synthetical technical biphenyl; Organic synthetical technical diphenyl. 国内外贸易：公司拥有进出口权，开展以企业产品为主的国内外商品贸易与技术贸易。
Fine Chemical and Hi-Tech Products : Organic synthetical technical biphenyl;Organic synthetical technical diphenyl. 精细化工高科技产品生产：有机合成专用活性联苯、有机合成专用活性二苯醚。
Objective To explore effects of polychlorinated biphenyl, PCB153 on DNA damage induced by benzo(a)pyrene (B[a]P) in HepG2 cells. 目的观察多氯联苯(PCBs)153和苯并[a]芘(B[a]P)单独及联合处理对人肝肿瘤细胞HepG2的DNA损伤作用。
Objective To explore the effects of polychlorinated biphenyl congener 153(PCB 153 ) during pregnancy on embryonic development and its mechanism. 目的探讨多氯联苯同系物PCB1 53 对胚胎生长发育的影响及其作用机制。
Objective To study the effect of polychlorinated biphenyl (PCB)153 on genotoxicity of B(a)P through inducing P450 enzymic activity. 目的探讨多氯联苯(PCBs)153通过诱导P450酶活力对苯并(a)芘[B(a)P]遗传毒性的影响。
METHODS: Structure modification to the carbomethoxy of DDB to synthesize some symmetrical and asymmetrical biphenyl anlogues. 方法：对联苯双酯的酯基进行结构修饰，合成了一些对称和不对称的联苯双酯类似物；
When the dihedral angle is small enough, the electron can be more efficiency resonance on biphenyl group, and the electropolymerization don't occur. 当双面角小于某一个角度，联苯间的电子能够有效的共振，电聚合就不会产生；
Objective To explore the effects of polychlorinated biphenyl congener (PCB153) an environmental estrogen,on embryonic development and its mechanism. 目的探讨环境雌激素多氯联苯同系物PCB153对发育过程中小鼠胚胎细胞凋亡的影响。
Biphenylacetic acid was synthesized from biphenyl by chloromethylation, cyanation and hydrolysis with 55% sulfuric acid in an overall yield of 72%. 以联苯为原料,经氯甲基化、氰基取代及酸水解制得4-联苯乙酸,并优化了各步反应条件,新工艺总收率72%25。