氧化测定法

This paper studies the method of determining 14 rare-earth impurities in high-purity holmium oxide by ICP-MS.

本文研究了用电感耦合等离子体质谱法测定高纯氧化钬中14个稀土杂质的方法。

In this artical,the authors dynamically determinded superoxide dismutaseactivities in red cells and plasma in different periods(incipience,remission and relapse),pathologic typesand clinical stages of malignant lymphoma respectively with the method of pyrogallol autoxidation.

用邻苯三酚自氧化法测定了50例恶性淋巴瘤不同病期（初发期、级解期、复发期）、不同病理类型、不同临床分期病人的红细胞及血浆超氧化物歧化酶＊力变化。

Results In measurement with improving five-step iodometry method,it was optimal that the total concentration of the oxides in the sample solution was 1000-3000 mg/L and the sample volume was 2-5 ml.

结果改进五步碘量法测定中，样品溶液中氧化性物质的总浓度在1000-3000mg/L，取样量为2-5ml为佳。

The results show that the best buffer pH value is 4, the best temperature of water bath 100℃ and the isatin dosage 1.3 mL.

结果表明：利用靛蓝胭脂红褪色分光光度法测定葡萄糖氧化酶活力时，缓冲液最佳pH值为4、最佳水浴温度为100℃、靛蓝胭脂红最佳用量为1.3 mL。

A catalytic kinetic spectrophotometric method for the determination Ni has been developed based on the enhancement of the catalytic effect of Ni on the oxidation fading reaction of isatin and sodium persulfate.

基于聚乙二醇对Ni(上标 2+)催化过硫酸钠(Na2S2O8)氧化靛红褪色反应的增敏效果，建立了一种新的测定Ni(上标 2+)的增敏动力学光度法。

The different extracts were mode from the perilla frutescents of labiate plant using different reagent, their antioxidant activity was measured by the Oven－Storage Test in the salad oil and the rapeseed oil, and in comparison with Tea Polyphenols and VE.

董贵玲 ，王维华，张燕平采用不同溶剂，从唇形科植物紫苏茎叶中制得各种提取物，用烘箱法测定它们在色拉油、菜油中的抗氧化性，并与茶多酚、VE比较。

Perfusion manometry was performed, pressure curve of sphincter of Oddi was recorded and quantity of nitric oxide synthase was analyzed.

采用灌注式测压法测定并记录胆道口括约肌压力曲线，图像分析仪对胆道口括约肌中一氧化氮合酶含量进行分析。

The method on trans fatty acids analysis in food is very important. The effects of methylate sodium, potassium hydroxide, sulfuric acid and boron trifluoride in methanol and their different concentration and dosage on TFA analysis were studied. The chromatographic condition and the influence of time and temperature on the esterifation of TFA using boron trifluoride in methanol were optimized. A method for analyzing TFA were established by GC based on boron trifluoride in methanol and RT-2560(100m×0.25mm×0.2μm) capillary column.

研究了甲醇钠－甲醇、氢氧化钾－甲醇、浓硫酸－甲醇和三氟化硼－甲醇4种甲酯化试剂的浓度、用量及甲酯化时间和温度对反式脂肪酸检测的影响，优化了色谱条件，建立了以三氟化硼－甲醇法甲酯化，RT-2560(100m×0.25mm×0.2μm)毛细管柱为基础的反式脂肪酸气相色谱检测方法，C18：1-9 t， C18：1-11 t， C18：2-9 t， 12 t和C22：1-13 t 4种反式脂肪酸的最小检出浓度在0.774.08 mg/kg之间。4种反式脂肪酸不同添标浓度回收率为98.44%101.23%，重复测定的相对标准差在0.22%1.31%之间，有较好的准确度和重现性。

Diffusion coefficients for metol and p-benzenediol were 2.1×10 cm^2/s and 2.7×10^6 cm^2/s, respectively. The electrocatalysis mechanism has been studied. ATR-FTIR was used for the characterization of the ME/Au SAMs. The oxidation currents were linear in the range of 1.0×10^(-7)~1.0×10^(-4)mol/L for metol and 6.0×10^(-6)~6.0×10^(-4)mol/L for p-benzenediol, with the correlation coefficients of 0. 9992 and 0.9996 by differential pulse voltammetry, and detection limit 2.0×10^(-8)mol/L and 1.2×10^(-6) mol/L for metol and p-benzenediol, respectively.

采用水平衰减全反射－傅立叶变换红外光谱技术对ME/Au SAMs进行了表征，示差脉冲伏安法同时测定米吐尔和对苯二酚，不产生干扰，其氧化峰电流与相应物质的浓度分别在1.0×10^(-7)~1.0×10^(-4)mol/L和6.0×10^(-6)~6.0×10^(-4)mol/L范围内呈良好的线性关系，相关系数分别为0.9992和0.9996，检测限分别为2.0×10^(-8)和1.2×10^(-6)mol/L。

The results showed that the redox peak potential difference of metol on IL/CPE was smaller than that on the bare CPE, while peak current was significantly increased, which indicated that IL/CPE had electrocatalytic activity toward the redox of metol.

研究表明，米吐尔在IL/CPE上的氧化、还原峰电位差比其在裸碳糊电极上的小，而峰电流却显著增加，说明IL/CPE对米吐尔有电催化作用；共存物对苯二酚干扰米吐尔的测定，通过方波伏安法可以消除其干扰。

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。