测定限

取样5g时测定限0.6μg/g，测定精度和回收率均为满意。

Limit of determination is 0.6 μ g / g when the sample is 5 g. The accuracy and recovery are satisfactory .

其测定限达到ng/ml级。

The limit of detection of ng / ml grade was obtained .

该法对海水中汞的测定检出限约为1pmol/dm~3，比普通直接冷原子吸收法降低一个数量级。

The detection limit of the presented method reached to less 1 p mol / dm3 , about one order of magnitude lower than that by directly cold vapor atomic absorption spectrometry .

若基于视觉评估或基于信噪比测定检测限，给出相关的图谱用作证明。

If DL is determined based on visual evaluation or based on signal to noise ratio , the presentation of the relevant chromatograms is considered acceptable for justification .

无机锡和有机锡的测定检测限分别为27pg和58pg，精密度为2.04%和2.13%。

The detection limits were 58 pg and 27 pg for organotin and inorganic tin , respectively . The relative standard deviations of this procedure , were 2 13 % and 2 04 % , respectively .

充分利用了液相色谱的分离能力和质谱的定性定量能力，方法简单快捷，样品净化效果好，测定低限能够满足限量要求。

This method make full use of the liquid chromatographic separation ability and mass spectrometry qualitative ability , it is simple , quick , accurate and suitable , the sample purification effect is good , the limit of detection can satisfy the limited requirements .

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

通过优化19种PAHs的分离条件，SIM法实现烟灰中19种PAHs的同时测定，检出限达到0.02ng/mL。

Under the optimum separation condition , 19 kinds of polycyclic aromatic hydrocarbons ( PAHs ) were simultaneously determined with detection limit of 0.02ng/mL .

采用气相色谱法对空气中正丁烯的含量进行了测定，检测限为纳克级，浓度在0.951～7.608mg／m3范围内呈线性关系，变异系数小于10%，加标回收率在104%～97%之间。

The concentration between 0 . 951 mg / m3 and 7 . 608 mg / m3 shows linear relation . The coefficient of variation is less than 10 % . The recovery range is 104 % ~ 97 % .

纳米铁（Ⅲ）在最佳试验条件下，即pH7.4的二甲砷酸钠缓冲介质中，BSA测定的检测限为6.6ng/mL，线性范围为0.02～0.70μg/mL。

For ferric nanoparticles , at the optimum condition of pH7.4 sodium cacodylate buffer solution , the detection limit of bovine serum albumin ( BSA ) is 6.6ng/mL and the linear range locate in 0.02-0.70ug/mL .

测定土塑限的试验方法研究

Study of the Experiment Method for Determining the Plastic Limit

该方法简单，取样量少，重现性好，样品测定的检出限达5ppb。

The method is convenient , sensitive and reproducible with a detection limit of 5 ppb .

GB10068.2-1988旋转电机振动测定方法及限值振动限值

Measurement evaluation and limits of the vibration severity of rotating electrical machinery & Limits of the mechanical vibration severity

对原子吸收法测定铜检出限的测量不确定度进行分析探讨，建立了不确定度的评估方法。

The uncertainty degree of determination limit of copper with atomic absorption spectrometry has been discussed and established the evaluation method .

主要是测定摩擦片式限滑差速器的转矩特性，以及在粘性式限滑差速器硅油粘度、叶片间隙、初始温度与填充率改变时，其限滑转矩输出特性的变化情况。

It mainly measures how the characteristics of limited torque outputted change when viscosity of silicon oil , distance of vane , initial temperature and filling ratio change .

荧光测定的检出限为2ppb，铜的浓度在0&1.5μg/25ml范围内工作曲线呈直线关系。

The limit of detection of the method for the fluorimetric determination of copper is 2 ppb , and the calibration curve is linear over the range Cu2 + 0-1.5 μ g / 25ml .

以增加峰面积，提高测量的准确度和精密度，苯甲酸测定的检出限为1mg/ml，相对标准偏差为130%，样品加标回收率为93%～104%

The upper limit for the determination of benzoic acid was 1mg / ml , the relative standard deviation was 1 30 % , and the indexed recovery ratio of samples 93 % ~ 104 % .

在H2SO4介质中，痕量钌的存在对KIO4-偶氮胂DBM的褪色反应有明显的催化作用，本文研究了该褪色反应的最佳条件及痕量钌的测定方法，检出限为0.001μg。

A spectrophotometric method has been developed for the determination of Ruthenium , based on their catalytic effect on potassium periodate oxidation of arsenazo-DBM in H_2SO_4 medium . The optimum conditions of the reaction have been determined .

在最佳条件下，本法测定孕酮的检测限为0.2ng/mL线性范围为0～100ng/mL，体系批内和批间变异均小于11%。

At optimal experimental conditions , the proposed method had a detection limit of 0.2 ng / mL with a larger working range of 0 ~ 100 ng / mL , and the inter-assay and intra-assay CV were both less than 11 % .

分析了该测定方法的检出限、精密度、准备度及可行性。

The detection limit , accuracy , feasibility and sample preparation are analyzed .

测定I-的检出限为17.7ng/mL，线性范围为0.02~2.00μg/mL，已用于蔬菜中碘的测定。

The linear range for the determination of iodine was 0.02 ~ 2 μ g / mL with the detection limit of 17.7 ng / mL. This method has been applied to determination of iodide in vegetable , good results have been achieved .

本文通过全程序空白实验、平行样实验等，评估测定方法的检出限；进行误差判断；

In this paper , we evaluate the limit of examination , judge the errors and master the application of the analytical method to ensure the quality of our monitoring by the blank experiments in all procedures , the parallel experiment and so on .

仪器一次可以同时测量5种以上元素，甚至多达十余种元素的定性、定量测定，其检出限可达10200mg/kg，在原位条件下分析精度可达2%10%。

Without liquid nitrogen cooling the on-site measurement can be realized , and qualitative and quantitative analysis can be completed for 5 10 kinds of elements simultaneously . The detection limits range from 100 to 200 mg / kg , and the precision is 2 % 10 % .

介绍了在2个监测点，用直接法测定大气中的非甲烷烃。测定方法的检出限可达0.0065mg/m~3，在线性范围0～10mg/m~3时，线性相关系数为O。

Description of a direct determination method for am - bient air non-methane was presented .

根据化学需氧量测定原理和分析方法，推导出化学需氧量测定限，由测定限确定不同浓度废水化学需氧量测定的稀释倍数。

Based on the principle of COD determination , the detection limit was infered . Dilution ratio was determined to waste water of different concentrations for detection of COD .

目的：提高抗生素效价测定中加液的准确性，降低由于视觉误差造成测定结果可信限率的偏大。

Objective : Improving the accuracy of adding solution in the measurement of antibiotic titer , lowering the visual error which can lead a high result in confidence-limit rate .

探讨了采用毛细柱气相色谱法测定饮料中作为防腐剂的山梨酸、苯甲酸，此方法可使各组分得到良好分离，分析时间短，准确度高，山梨酸、苯甲酸测定的检出限为O。

The determination of sorbic acid and benzoic acid as preservatives in beverages by capillary gas chromatography was studied . The method was featured by the good separation of sorbic acid and benzoic acid from the other components , the shortened time of analysis and the high accuracy of measurement .