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The sample was diluted by water containing a little amount of sodium chloride, and then extracted by hexane, purified by oil of vitriol to decrease impurity. The extracted solution was analyzed by GC-ECD and quantified by external standard method.

试样加水稀释，加入少量氯化钠，再用正己烷提取，浓硫酸净化样品，排除干扰杂质，以GC-ECD测定，外标法定量，六六六和滴滴涕在0.005~0.2μgmL^(-1)范围内，质量浓度与峰面积呈良好的线性关系。

The article analyzed the main resources of the uncertainty of the measurement, which include uncertainty of the working curve, uncertainty of the resolution ratio of the instrument, uncertainty of measure unrepeatability, uncertainty of standard solution, etc. It quantified these uncertainties respectively and composed them to a standard uncertainty. Finally it got the expanded uncertainty of the total organic carbon measurement.

分析了测量过程中不确定度的主要来源，即工作曲线的不确定度、测量仪器读数分辨率导致的不确定度、测量不重复性引起的不确定度、标准溶液引起的不确定度等，分别量化后合成标准不确定度，得到总有机碳测量的扩展不确定度。

Methods Streptomycin and dihydrostreptomycin were extracted from honey samples using a liquid extraction with a phosphate buffer followed by a solid-phase extraction based on weak cation-exchange columns. After sample preparation, the hydrophilic interaction chromatography was used to retain streptomycin and dihydrostreptomycin on the column for the separation of the analytes from endogenous compounds. The aminoglycosides were detected and quantified with electrospray ionization tandem mass spectrometry.

方法用磷酸盐缓冲溶液提取蜂蜜中的链霉素和双氢链霉素后，经弱阳离子交换柱进行固相萃取，样品制备后采用亲水作用色谱，使链霉素和双氢链霉素实现保留，从而与内源性物质达到分离，采用电喷雾离子化串联质谱法检测和定量。

Serum aminoterminal propeptide of procollagen type III was quantified by RIA ( Riagnost PIIIP c.t. Biodesign, 20 controls= 0.4 ± 0.2 U/L ).

用放射免疫方法来定量地测定血清中III型原骨胶原的氨基酸末端（PIIIP的放免诊断，生物设计20个对照组=0.4±0.2U/L）。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了