检出限

本文以硅中硼样品为例，介绍了深度剖析条件下测量离子探针质谱计检出限的技术，并对有关问题进行了讨论。

The techniques for measuring detection limit of ion probe mass spectrometer under the condition of depth profiling are described , taking boron implanted in silicon for example , Problems concerned are discussed .

离子探针质谱计的灵敏度与检出限I.定义和影响因素

Sensitivity and Detection Limit of Ion Probe Mass Spectrometer : I. Definitions and Influencing Factors

X射线荧光光谱分析检出限计算公式

Calculation formulas of detection limit in X-ray fluorescent spectrometry

X射线荧光分析检出限问题的探讨与建议

Discussion on the detective limit in x-ray fluorescence spectrometry

测定24种元素的检出限、准确度和精确度表明，X射线荧光光谱法适用于区域化探试样中主元素和微量元素的分析。

The method is well suited for analysis of 24 major and trace elements in regional geochemical exploration samples .

此法适用于微量分析，检出限可达0.006μg，适合现场快速分析。

The test limitation was 0.006 μ g , with high sensitivity and the method was suitable for quick analysis .

本方法氯最低检出限为0.71μg，标准偏差为13.19%。

The lowest detect limit of the me - thod is 0.71 μ g and the standard errow is 13.19 % .

在DNA荧光测序中，噪声影响分析的准确度和检出限。

Fluorescence signals in DNA sequencing are often contaminated by noise , which has negative influence on the accuracy and detection limit of analysis .

在最佳的实验条件下，锰钴镍的检出限依次为0.008、0.01、0.01μg／ml；

The detection limit of the three elements was 0.008 , 0.01 and 0.01 μ g / ml , respectively .

双波长分光光度法在矿石分析中的应用&Ⅱ.双波长K系数法降低测定的检出限和提高测定的准确度和精密度

Application of Dual-Wavelength Spectrophotometry to the Ore Analysis π . Lowering Detection Limit and Increasing Precision and Accuracy by Dual-Wavelength K-factor Spectrophotometry

优化了固相微萃取条件：萃取纤维、萃取方式、萃取温度、平衡时间、pH及电解质浓度等。在优化的试验条件下，进行了方法的检出限、精密度、回收率试验。

The conditions of SPME were optimized including fibre , extraction type , temperature , equilibrium time , pH value , support electrolyte .

本方法的检出限为0.2×10－12g／mL，精密度为7%。

A detection limit of 0 . 2 × 10-12 g / mL and a precision of 7 % are obtained .

ICP发射光谱仪锌元素检出限不确定度分析

Analysis on the Uncertainty of the Limit of Detection of Zinc with ICP Emission Spectrometer

该样机与常规的X射线光谱仪相比，对12种元素的检出限降低了2～3个数量级。

Detection limits for 12 elements obtained from this instrument were 2 to 3 orders of magnitude lower than these obtained from ordinary XRF spectrometer .

ICP-AES摄谱法的光谱分析检出限测定方法

Detection limits of ICP-AES spectrographic method

空气冷却ICP-AES测定硅锗锡铅磷砷锑铋的检出限

Study on the determination of Si Ge Sn Pb P as sb and Bi by air cooled ICP-AES

对于环境样品中这四种形态砷的定量检出限为1.0μgAs，回收率达90～100%。

The quantitative limit is 1.0 μ g / g of elemental As for all four arsenic species . The recovery of 90 ~ 100 % of all four arsenic species from environmental sample is reported .

将SPE与ICP-AES联用，可有效地改善分析方法的灵敏度、检出限和抗干扰能力，同时也扩展了SPE的应用范围。

By combined SPE with ICP-AES , the analytical performance of the method could be efficiently improved .

方法简便、快速、灵敏（检出限为0.40μg·g~（-1）），对三种代表性标准矿样的分析结果表明，能满足痕量分析的要求。

Ml-1 of nickel . The proposed method is proved to be simple , rapid and with high sensitivity ( limit of detection : 0 . 4 μ g ? g-1 ) .

当SNR为3时，检出限为1.4ng／ml。

The detection limit is 1.4 ng / ml when the ratio of signal to noise is 3.The foreign ions do not interfere the determination of palladium .

在0～0.51ng／mL范围内，铜（Ⅱ）的溶出峰与铜的浓度呈线性关系。当富集时间为2min时检出限达0.012ng／mL。

A sensitive cathodic Stripping peak was at-0.6V . The limit of detection is 0.012ng/mL when preconcentration reached 2 minutes .

实验结果表明：WatersAlliance系统分离性能良好，但检出限尚达不到要求。

The experimental result showed that the separating property of Waters Alliance worked well , but the detection limit of the detector & PDA 996 can not meet requirement .

结果表明，超声波提取方法比传统浸取方法快速、准确，回收率为98.6～101.5%，方法检出限为2μg。

Compared with the traditional leaching technique , ultrasound-assisted leaching technique was simple and rapid . The recovery was 98.6 ~ 101.5 % . The determination limit of the method was 2 μ g.

采用标准加入法得到了满意的结果，钾和钠的检出限分别为0.029ng／ml及0.0057ng／ml。

The results are satisfactory by standard addition method . The detection limits of K and Na are 0 . 029ng / ml and 0 . 0057ng / ml respectively .

苯的检出限低至1pg，优于配备氢火焰检测器的实验室气相色谱仪两个数量级。

The detection limit is as low as1pg for benzene , two orders of magnitude better than the gas chromatograph with FID .

对于20g大米样品，检出限为0.013mg／kg。

The detection limit was 0.013 mg / kg for a rice sample of 20g .

本方法的特征质量为18pg/0.0044A，检出限为4.7pg（3s）。

The characteristic mass of the method is 18 pg / 0.0044 A and the detection limit is 4.7 pg ( 3s ) .

PCDD/Fs和PCBs的检出限分别为0.1-0.8pg/g和0.05-0.6pg/g。

The detection limits of PCDD / Fs and dioxin-like PCBs were 0.1-0.8 pg / g and 0.05-0.6 pg / g respectively .

在新一代手提式多元素X荧光仪中，现场X荧光仪对铜、锌、砷等元素的检出限为10×10-6。

It is proved through the experiment that the detection limits of copper , zinc and arsenic are 10 10 ~ ( - 6 ) in a portable many-element X-ray fluorescence appearances of new generation .

目的应用荧光标记STR多基因座联合检测技术对混合生物样品较少组分最低比例检出限和STR基因型的判定进行研究。

Objective Study of minimal proportion of minor component to be detected in mixed biological samples and the interpretation of genotyping result .