加标

MIP and NIP were used as a solid-phase adsorbent, respectively. The type and amount of the eluting agent were optimized. The recoveries of standard addition are in the range of 86.7%~ 97.7%, with precision of 1.2%~ 3.8%. It has provided reference for the determination of citrinin.

两者分别作为固相吸附剂，通过洗脱剂种类和用量等优化后，在大米的加标回收实验中，样品的加标回收率在86.7%~97.7%之间，相对标准偏差在1.2%~3.8%之间，得到了比较理想的回收率，为桔青霉素的检测提供了参考。

After the ferromolybdenum was dissolved completely in nitric acid at low temperature,adding internal standard elements of ~(45)Sc,by use of internal elements calibrated method,the content of Sb,Cu,Sn,Si and P in ferromolybdenum is determined directly by ICP-MS.

将钼铁样品用HNO3低温溶解完全后，加入内标元素45Sc，采用内标法，用ICP-MS仪进行测定。文中讨论了基体钼对测定的影响。本方法的加标回收率为98.0%~102.5%，相对标准偏差RSD为1.6%~3.5%。本方法具有简便、快速、准确等特点，可用于钼铁样品中微量杂质元素的分析

It has been used to determine copper ion in waste water samples from hydrometallurgy of copper. The relative standard deviation (n=8) for the determination results of two samples were 0.8% and 1.4% and the recovery were 101% and 100%, respectively.

该离子选择性电极已用于湿法冶金废水中Cu(上标 2+)的分析，两个样品测定结果的相对标准偏差(n=8)分别为0.8%和101%，加标回收率分别为101%和100%。

Chromic trioxide and chromium hemitrioxide are determined with iodometry, the coefficient of variation of chromic trioxide is 0.056%, and the recovery of marked compound is 99.82-99.83%; the coefficient of variation of chromium hemitrioxide is 1.45%,and the recovery of marked compound is 98.55-99.26%; iron is determined by complexometric titration, the coefficient of variation of iron is 1.73%, and the recovery of marked compound is 99.12-99.23%;sulfate is determined by complexometric titration, the coefficient of variation of sulphate is 0.16%, and the recovery of marked compound is

Analysis Of The Chromium Electroplating Wastewater By Oxidation-reduction And Complexometric Titration-化学工程与工艺-本文采用氧化还原滴定法与络合滴定法对镀六价铬的废水中铬酸酐，三氧化二铬，铁和硫酸根的含量进行了测定：铬酸酐和三氧化二铬用碘量法测定，铬酸酐的变异系数为0.056%，加标回收率为99.82-99.83%，三氧化二铬的变异系数为1.45%，加标回收率为98.55-99.26%；铁用络合滴定法测定，其变异系数为1.73%，加标回收率为99.12-99.23%；硫酸根用络合返滴定法测定，其变异系数为0.16%，加标回收率为

The average recoveries were 60.2%~125% and 64.5%~126% for the drugs in plasma and urine except those of perphenazine, thioridazine and chloropromazine in plasma were 37.6%~57.5%, 36.3%~48.3%, 52.4%~67.4%, respectively; trazodone and diazepam in urine were 100%~142% and 108%~177%, respectively. The relative standard deviations of all the drugs in plasma and urine were within 0.8%~26% and 2.6%~18%(n=6), respectively. The detection limits of the 4 barbitals ranged from 20 to 100 mg/L and those of the other drugs ranged from 0.05 to 2.0 mg/L.

血浆样品中待测组分的加标回收率除了奋乃静、硫利哒嗪和氯丙嗪的分别为37.6%～57.5%， 36.3%～48.3%和52.4%～67.4%外，尿液样品中待测组分的加标回收率除了曲唑酮和地西泮的分别为100%～142%和108%～177%外，血浆和尿液中其余待测组分的加标回收率分别为60.2%～125%和64.5%～126%，相对标准偏差分别为0.8%～26%和2.6%～18%(n=6)；除了巴比妥类药物的检出限为20～100 mg/L外，其余药物的检出限均为0.05～2.0 mg/L。

As results showed, for limonin and naringin, the linearity was good within the ranges of 1.00-50.00 mg/L (r=0.9992) and 20.00-160.00 mg/L (r= 0.9988) respectively, and the detection limits were 0.07 μg and 0.14 μg, then the average recoveries were 98.69% and 100.13% with relative standard deviations of 2.5% and 1.5%, respectively.

实验结果表明，柠檬苦素在1.00～50.00 mg/L时线性关系良好(r=0.9992)，检出限为0.07 μg，平均加标回收率为98.69%，相对标准偏差为2.5%；柚皮苷在20.00～160.00 mg/L时线性关系良好(r=0.9988)，检出限为0.14 μg，平均加标回收率为100.13%，RSD为1.5%。

The test showed that the recovery yield of marked compound in desulfurized solution was 103.3%, it was indicated that impurity in the mixed system had smaller influence on determination, the method is more accurate in determination of picric acid in desulfurized solution.

经过对脱硫液进行加标回收试验表明，加标回收率为103.3%，说明混合体系中杂质对测定干扰小，该方法对测定脱硫液中苦味酸的浓度比较准确。

A good linear relationship could be obtained in the concentrations ranged from 1.6 to 175 mg/L for sulfamic acid and from 3.2 to 175 mg/L for DL-malic acid. The detection limits of each acid were 0.4 mg/L and 0.8 mg/L, respectively.

两者的线性范围分别为1.6~175mg/L和3.2~175mg/L；检出限分别为0.4mg/L和0.8mg/L；相对标准偏差分别小于1.1%和0.9%(n=9)；氨基磺酸的加标回收率在97%~103%之间，DL-苹果酸的加标回收率在93%~105%之间。

The interference of metal ions Fe(superscript 3+、Cu(superscript 2+)and so on in oil can be eliminated by using hydroxyl amino hydrochloric acid and sulfourea as masking agents.

以盐酸羟胺和硫脲作为掩蔽剂可消除Fe(上标 3+)、Cu(上标 2+)等离子的干扰，对大庆原油与锦西减四线馏分油中的钒进行测定，相对标准偏差不大于3.5%，加标回收率为

The method has good linearity in the range of 2.50~100 mg/L for trigonelline (r=0.9996). The recoveries were on an average of 102%by adding 29.2 mg/L and 43.8 mg/L with relative standard deviations of 4.17% and 2.28%(n=3), respectively.

胡芦巴碱的线性范围为2.50～100 mg/L (r=0.9996)；两个加标水平的平均加样回收率为102%，相对标准偏差分别为4.17%和2.28%(n=3)。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。