加标

The method was applied to the determination of anions in fish and shrimps with the recoveries of

海鱼和虾仁样品中目标物的加标回收率为81.8%～100.0%。

The average recoveries of captan and folpet from the apples spiked at three levels ranged from 69.3%-106% and 101%-108%, with RSD of 3.7%-4.7% and 1.3%-5.4%, respectively.

苹果样品中3个添加水平的平均加标回收率为克菌丹69.3%～106%，RSD为3.7%～4.7%；灭菌丹101%～108%，RSD为1.3%～5.4%。

This paper studied four pretreatment methods by adding three different retention time organochlorine pesticides(α-BHC、Dieldrin、pp′-DDT) to fish sample and making different concentration(0.01、0.1、1),then using GC-ECD determinate its recoveries.

研究了用气相色谱——电子捕俘器法测定鱼肉中有机氯农药的四种不同前处理方法。通过向鱼样中加入三种不同保留时间的有机氯农药(α—六氯苯、狄氏剂、滴滴涕)，并测定三种不同浓度(0.01、0.1、1)时加标回收率。

Results The detection limits of formic ion (S/N= 3) were 0.0705mg/L and 0.0477 mg/L with these two eluents respectively.

结果〕甲酸根离子的检出限（S/N=3）分别为0.075mg/L和0.0477mg/L，在 3μs量程档，线性范围为0.1～8.0mg/L，样品的加标回收率在92.9％-106.3％之间，RSD.0％。

Proposed method has been applied to measure molybdenum in alloy steel with satisfactory results, the recovery and RSD obtained using standard addition method were 97.8%-102.5% and 0.25%-0.30%, respectively.

方法应用于合金钢中微量钼的分析，结果与原子吸收光谱法一致，加标回收率和相对标准偏差分别在97.8%~102.5%和0.25%~0.30%之间。

Results The regression formula of standard curve was Y=216.7C-38.1, r=0.9995, The linear range was 0~10g/L; the recovery of standard addition was 93.0%~99.8%, RSD was 0.5%, 1.0% and 6.4%.

结果 方法标准曲线回归方程为Y=216.7C-38.1，r=0.9995，线性范围为0~10g/L；样品加标回收率为93.0%~99.8%，RSD为0.5%、1.0%和6.4%。

The excitation and emission wavelengths in the measurement are 345 nm, 430nm respectively. When the concentrations of FWAs are from 0 to 1.0 μg/mL, they have a linear relationship with the emitted fluorescence intensity. In this interval, the calibration curve is y=0.001 7x-0.018 7, and R2 is 0.999 2, the limits of detection and quantification are 4 μg/g and 10 μg/g respectively, and the average percentage of recovery is 95.3%, which meet the measuring requirements.

该方法激发波长为345 nm，发射波长为430 nm；定量标准曲线为y=0.001 7x-0.018 7，在0～1.0 μg/mL范围内线性相关性R2=0.999 2；方法检出限4 μg/g，定量限10μg/g，平均加标回收率为95.3%，可满足检测要求。

Sample matrix are discharged by the pre-column. The mobile phases applied consisted of 0.1% HOAc (pH3.0) acetonitrile-water on extraction column with UV detection at 225nm. Then, coupled-column liquid chromatographic methods for the direct analysis of atrazine and simazine in urine was established. As a result, the system showed good chromatographic property in the on-line analysis of atrazine and simazine in urine.

使用该系统对尿中的莠去净和西玛津残留进行了分离分析，以含有0.1%乙酸的酸性水缓冲液对加标尿液中莠去净类化合物保留在预柱上，干扰分析的大分子被排阻而无保留通过，其它干扰分子保留小而通过，再切换六通阀，以乙腈和0.1%乙酸水溶液进行梯度洗脱，进而在下一级ODS分析柱上进行分离（紫外检测225nm），两种除草剂的分离分析取得了良好的定性定量结果

Results:The linear range of phosphorus oxychloride in air of workplace was 0.0~5.0 μg/ml with its correlation coefficient...

结果：工作场所空气中三氯氧磷的线性范围为0~5.0μg/ml；相关系数为0.9993；方法检出限0.030μg/ml，若采集10 L空气进行检测，则最低检出浓度为0.03 mg/m3，相对标准偏差为0.35%~1.59%，样品加标回收率为96.9%~103.2%，样品在室温下至少可保存1周。

The recoveries of neomycin at a concentration of 50.0 ng/mL in spiked water samples were approximately 70.0%.

结果表明，几种水体中50.0 ng/mL新霉素的加标回收率均达70.0%。

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。