三氯甲烷

According to the direct ratio relationship in a certain range between the color degree of the organic solvent with Pb^2＋ and dithizone in the complex compound and the amount of the lead, the amount of the lead can be rapidly determined by way of the visual colorimetry.

再加入双硫腙的三氯甲烷溶液，根据Pb^2＋离子与双硫腙生成的配合物在有机溶剂中的颜色深浅与铅含量在一定范围内成正比的关系，用目视比色法即可快速判断出样品中的铅含量。

After the sample is dissolved and the disturbance eliminated, then dithizone and chloroform solution are added in the sample. According to the direct ratio relationship in a certain range between the color degree of the organic solvent with Pb2+ and dithizone in the complex compound and the amount of the lead, the amount of the lead can be rapidly determined by way of the visual colorimetric.

样品消解并消除干扰离子后，加入双硫腙的三氯甲烷溶液，根据铅与双硫腙生成的络合物在有机溶剂中的颜色深浅与铅含量在一定范围内成正比的关系，用目视比色法即可快速判断出样品中的铅含量。

When the concentration of tested gases was 2000 mL/m3, chloroform, ethylene dichloride, formaldehyde and benzene did not interfere with the determination of acetone.

当各测试气体浓度均为2000 mL/m3时，三氯甲烷、二氯乙烷、甲醛和苯气体不干扰丙酮的测定。

3 And 0. 972 4 within the concentration ranges of dichloromethane （ 1 - 10 μg/g） and trichloromethane （1 -10 μg/g）, respectively.

二氯甲烷和三氯甲烷的最低检出限分别为0.027 3μg/g和0.041 0μg/g，加标回收率分别为93.6%～102%和98.1%～103%。

The results of comprehensive evaluation indicated that the effect of the suitable concentration extracts were better, the effect of Ether extract 1000mg/L

提取物浓度与抗寒效果之间无明显的相关性，植物材料前胡的抗寒作用可能是前胡乙醚、丙酮、三氯甲烷等提取物中一种或多种成分的诱导和保护作用的共同结果。

Solvent remains to 3 chloric firedamp and alcohol can be departed and detect in result sample.

结果样品中残留溶剂三氯甲烷和乙醇能被分离和检测。

In general craft,∶ of 2 chloric firedamp ∶ of 35~30 of ∶ of =65 of 3 chloric firedamp 70, their scale can adjust, and 4 chloridize carbon occupies 7%~10% about.

在一般的工艺中，二氯甲烷∶三氯甲烷=65∶35~30∶70，它们的比例是可以调节的，而四氯化碳约占7%~10%。

The experiment showed that calcium carbide residue appeared not only neutralization but also flocculation, meanwhile, the Fe ~(2+) and Fe~(3+) from zero-valent iron reduction formed hydroxid to flocculate and furtherly remove 80% chloroform and 10%tetrachloromethane respectively.

在优化的实验条件下，对还原处理的出水用电石渣进一步处理，废水水中的铁离子产生絮凝作用，三氯甲烷和四氯化碳的去除率分别达到80%和10%。

And, this process can enhance performance of coagulation and flocculation precipitation and decrease coagulation agent inlet.

由于高锰酸钾的预氧化作用，降低了常规工艺中的预加氯量，三氯甲烷的含量明显降低。

The results showed that the homogeneity and stability were maintained at least 18 months to keep the accuracy and reliability.

结果表明，三氯甲烷中有机磷农药混合标准样品的均匀性良好，至少在18个月的时间内稳定。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新