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- Determination of trace cadmium in the taste food sample was carried out using single-sweep polarography in the supporting electrolyte solution of 1. 建立用一阶导数单扫描极谱法测定食品中凯氏氮含量的简单、快速的方法。
- Study on Extractive Spectrophotometry for the Determination ?of Trace Cadmium in Water by Ion?Pair of CdI??2-??4 and ?Fe(phen)??2+??3 with 1,2?Dichloroethane?? CdI_4~(2-)·Fe(phen)_3~(2+)离子对1,2-二氯乙烷萃取光度法测定水中痕量镉的研究
- In this paper, the trace cadmium in organism was determined by GFAAS with IL Fastac autosampler. A matrix modifier (NH4)2HPO4 was applied to determination. 本文采用金属涂层石墨管;结合使用(NH_4)_2HPO_4为基体改进剂及自动雾化淀积进样技术;对生物样品Cd的测定进行研究.
- Trace cadmium in the calcium salt reagents was determined by flame atomic absorption spectrometry after separation and enrichment with sulfhydryl cotton. 采用巯基棉分离富集钙盐试剂中的痕量镉，用火焰原子吸收光谱法进行测定。
- A sensitive and selective solid phase extraction for the determination of trace cadmium in food samples using modified peanut shell as adsorbent was developed. 研究了改性花生壳固相萃取-原子吸收光谱法测定食品样品中痕量镉的方法。
- With the microwave digestion technique and graphite furnace atomic absorption spectrometry method, the trace cadmium in water treatment reagent is measured. 采用微波制样技术,用石墨炉原子吸收法测定水处理剂聚合氯化铝中痕量镉。
- Trace cadmium in the sodium salt reagents of NaBO2. 4H2O,NaOAc,Na2CO3 and Na2HPO4l2HzO was determined by flame atomic absorption after separating and enriching with surmydryl cot-ton. 偏硼酸钠、无水乙酸钠、无水碳酸钠、磷酸氢二钠等试剂中的痕量镉，经巯基棉分离和富集后，以火焰原子吸收光谱法进行测定。
- I can't trace that letter you sent me. 我找不到你寄给我的那封信。
- He spoke without a trace of emotion. 他说话时毫不动感情。
- Did the police find any trace of the murderer? 警方找到凶手的行踪了吗？
- They failed to find any trace of the runaways. 他们未能找到逃跑者的任何踪迹。
- There was barely a trace of salt in the soup. 汤里简直一点盐也没有放。
- The post office tried to trace the lost letter. 邮局设法查出那封丢失的信。
- The kids are learning to trace the letter. 孩子们学描字母。
- He always spoke with a trace of sarcasm. 他说话总带着一丝讽刺。
- The powerhouse was trace out accurately later on a large scale map. 后来发电站被精确地描画在大比例地图上。
- A faint or fleeting indication; a trace. 模糊的暗示模糊的或一闪即逝的暗示; 迹象
- Study of Determination of Trace Cadmium in Magnesite by Graphite Furnace Atomic Absorption Spectrometr 原子吸收法测定原镁石中痕量镉的研究
- The country woke from her trace of two hundred years. 这个国家在沉睡了200年之后觉醒过来了。
- The rain flushed away the trace left by the criminals. 大雨把犯罪分子遗留的痕迹冲刷掉了。
