二甲酸

Phthalic Acid Esters have been extensive used in industry,and become one of the most widely pollutants in environment.PAEs were detected in most environmental medium such as air,water and sediment nowadays.

由于在工业上的广泛应用，邻苯二甲酸酯类化合物已成为地球上最普遍存在的环境污染物之一，目前在大气、水体、土壤中均可检测到。

In cosmetics, nail polish of the highest content of phthalic acid esters, aromatic components, many cosmetics also contain the substance.

在化妆品中，指甲油的邻苯二甲酸酯含量最高，很多化妆品的芳香成分也含有该物质。

Phthalic acid esters in order to reduce the harm to humans, usually not used to the attention of the best instant hot foam containers.

为了减少邻苯二甲酸酯对人体的危害，平时要注意最好不要用泡沫塑料容器泡方便面。

The results show that the thermal decomposition temperature of phthalic acid in SiO2 xerogels is 100℃ higher than that in air due to the protection by SiO2 xerogels.

指出邻苯二甲酸由于受到SiO2凝胶的保护，其热分解温度比在空气中提高了近100℃。

The results indicated phthalid acid, benzoic acid and cinnamic acid all inhibited the germination of different processed tomato varieties, which caused lower germination rates and shorter radicle compared with those of ck. The difference reached significant level or extremely significant level.

结果表明：邻苯二甲酸、苯甲酸和肉桂酸均抑制了加工番茄不同品种种子的萌发，表现在萌发率、胚根长较对照均有所降低，差异达到显著或极显著，而且随有机酸浓度的增加，这种抑制程度也逐渐增强。

Afterwards, N-(6-chloro-3-pyridinemethyl) phthalimide is prepared by using potassium phthalimide, as nucleophilic reagent, condensation reacting with 2-chloro-5-methylpyridine at a temperature of 70℃.

然后在70℃条件下，以邻苯二甲酸亚胺钾作为亲核试剂，与2-氯－5-氯甲基吡啶发生缩合反应，制备了N-（6-氯－3-吡啶甲基）邻苯二甲酰亚胺。

This thesis take the phthalic acid as an example to intraduce the nonlinear data processing method in the mensuration of polybasic weak acid ionization constant, point out the defect of the linear data processing method, and give the main steps of nonlinear fitting.

以邻苯二甲酸为例，介绍多元弱酸电离常数测定实验数据的非线性处理方法，指出这类实验数据线性化处理的问题，并给出非线性拟合的基本步骤

Even carbon number alkenes, phthalic esters and nitrogen heteroatom-containing components were detected in the elution fractions, while such components were not detected without silica gel column separation, indicating that preseparation is very important for increasing the sensitivity of GC/MS analysis.

各洗脱馏分用GC/MS分析，其可测成分与直接检测相比，多检测出偶碳烯烃、邻苯二甲酸酯类和含氮化合物等，表明合适的预分离对提高GC/MS分析的灵敏度非常重要。

The IR spectra of the copolymers demostrate that copolymers were polycondensation product of homopolymer of propargyl alcohol with phthalic acid.

IR光谱证明了共聚物是邻苯二甲酸与丙炔醇均聚物的缩合产物。

Objective To inquire into the method of removement of phthalates in drinking water and make sure of the effective treatmet technology by screen.

目的 探讨水中邻苯二甲酸酯类化合物去除方法，并通过筛选确定有效去除工艺。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。