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detection tube     
相关语句
  检测管
     A highly sensitive method was selected by comparing several methods of detection tube.
     通过对常见的几种检测管法的比较,筛选出灵敏度较高的亚硝基铁氰化钠法;
短句来源
     A kind of detection tube was developed to determine low concentration CO 2 by using linear length metric analysis of active aluminum phenolphthalein absorption.
     应用活性氧铝—百里香酚酞吸附CO2线性比长法研制出低浓度CO2检测管
短句来源
     After preliminary study, the results show that the color degree of detection tube possessed a high correlation to the concentration of HCHO (γ=0.999 1).
     经初步试验,该检测管变色程度与甲醛浓度的相关性(γ=0.9991);
短句来源
     the coefficient of variation between length and concentration is 0 9981; the precision and accuracy accorded with GB7220~7280.There was no notable difference in the determining values between the detection tube and classic Hesi gas analyzer.
     检测管变色长度与CO2浓度的相关系数γ=0.9981,精密度与准确度符合国家标准83GB7220~7280。 其可靠性与经典的何氏气体分析器比较,结果基本一致。
短句来源
     Six kinds of detection tube and their four channels autosamplers for measuring low concentration harmful gases were prepared.
     以微球硅胶、活性氧化铝和素陶瓷为截体,研制成CO、CO2、SO2、NO2、NH3和H2S6种低浓度有害气体检测管和与之配套使用的四通道自动采样器。 可检测出环境空气中的上述有害气体。
短句来源
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  气体检测管
     Six kinds of detection tube and their four channels autosamplers for measuring low concentration harmful gases were prepared.
     以微球硅胶、活性氧化铝和素陶瓷为截体,研制成CO、CO2、SO2、NO2、NH3和H2S6种低浓度有害气体检测管和与之配套使用的四通道自动采样器。 可检测出环境空气中的上述有害气体。
短句来源
  探测管
     To investigate the influence of the structure and size of the overflow outlet on the separation performance of a deoiling hydrocyclone, three kinds of new overflow outlet are designed, i.e. the vortex shielded cap (VSC) type, combined VSC and vortex detection tube type, and solid vortex shielded tube (SVST) type.
     为探索溢流口结构和尺寸对除油水力旋流器分离性能的影响 ,设计出三种新型溢流口结构———涡流屏蔽罩式、涡流探测管和涡流屏蔽罩组合式以及实心涡流屏蔽管式溢流口。
短句来源
  “detection tube”译为未确定词的双语例句
     preparation of detection tube of low concentration SO_2
     低浓度SO_2检测管的研制
短句来源
     Development of a Detection Tube for Formaldehyde Based on Passive Sampling
     新型甲醛被动式检气管的研制
短句来源
     Preparation of Detection Tube of CO 2.
     低浓度二氧化碳检测管的研制
短句来源
     Preliminary Preparation of Detection Tube of Formaldehyde.
     甲醛检测管的初步研制
短句来源
     Production of Detection Tube for Mercury Gas Base on Passive Sampling
     汞蒸汽被动式检气管的初步研制
短句来源
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  detection tube
Spot-air, personal and continuous stationary sampling methods were in good parallel while the detection tube method was less valid in the case of vapour mixture exposure.
      
The results were compared with those from personal sampling and continuous stationary sampling coupled with gas-liquid chromatographic analysis well as detection tube methods.
      
Both respiration tests indicated increasing compost stability with processing time, but CO2 evolution rates from the alkaline trap method were higher than values from the gas detection tube method.
      
In this work, we have developed an alternative phosphate spot test, where phosphate concentration is measured by the color band length of PAMB formed in a detection tube similar to a gas detection tube.
      
An air sampling detection tube or head is inserted in the air stream of the duct.
      


A novel argon microwave induced plasma ionization detector has been developed. The construction of its main parts and the essential points of design are described. The detector consists of a surfatron, a quarts discharge tube and a detection tube. Argon plasma is produced through the excitation of surface wave and is sustained by surfatron. The working gas of plasma does not pass through the detection tube, thus its influence on the detection signal is reduced. The performance of the detector...

A novel argon microwave induced plasma ionization detector has been developed. The construction of its main parts and the essential points of design are described. The detector consists of a surfatron, a quarts discharge tube and a detection tube. Argon plasma is produced through the excitation of surface wave and is sustained by surfatron. The working gas of plasma does not pass through the detection tube, thus its influence on the detection signal is reduced. The performance of the detector has been, evaluate 1 with some organic compounds and inorganic gases. The sensitivity for benzene is 2.5×10~(-12)g/s.

设计和制作了一种新的气相色谱氩微波诱导等离子体离子化检测器(ArMIPID).介绍了该检测器主要部分的构造和设计要点.检测器由Surfatron、石英放电管和检测管构成,由表面波激发产生氩等子体.等离子体工作气体不经过检测管,减少了对检测信号的影响.对苯的敏感度达2.5×10~(-12)g/s.

A highly sensitive method was selected by comparing several methods of detection tube.The experimental conditions were as follows:The carrier is ceramics of 60-80 mesh,the concentration of indicator is 20%,the internal diameter of glass tube is 2.0-2.3mm,the sampling speed and volume are 0.3L/min and 12L,respectively.The results showed that the prepared detection tube had high sensitivity and accuracy degree(the mean and maximal relative errors are 5.09% and 7.13%,respectively),fine repeatability(coefficient...

A highly sensitive method was selected by comparing several methods of detection tube.The experimental conditions were as follows:The carrier is ceramics of 60-80 mesh,the concentration of indicator is 20%,the internal diameter of glass tube is 2.0-2.3mm,the sampling speed and volume are 0.3L/min and 12L,respectively.The results showed that the prepared detection tube had high sensitivity and accuracy degree(the mean and maximal relative errors are 5.09% and 7.13%,respectively),fine repeatability(coefficient of variation C.V<10%),there was no significant difference in tile determining values between the methods of detection tube and chemical analysis,H2S and NO2,when their concentrations were below 0.15mg/m3 and 0.01mg/m3 respectively,didn't interfere with the determining results.

通过对常见的几种检测管法的比较,筛选出灵敏度较高的亚硝基铁氰化钠法;同时筛选出载体为60—80目的素陶瓷,指示剂浓度为20%。玻璃管内径为2.0—2.3mm,采气速度为0.3(L/min),采样体积为12L,以此条件进行实验.结果表明,检测管变色长度对应SO2浓度的相关性很好;变异系数均小于110%,检测的重现性较好。检测管的测定值与理论值的平均相对误差为5.09%(<±15%),最大相对误差为7.13%(<±25%),准确度较高.测定结果可靠;与化学法比较,两者无显著性差异;浓度小于0.15mg/m3的H2S及浓度小于0.01mg/m3的NO2对SO2检测管无干扰.

A new detection tube for formaldehyde gas based on passive sampling has been developed according to the principle of the gas molecular diffusion and chemical adsorption.The tube contains inert materials impregnated with Shiffs solvation,which leads to a coloring reaction when in contact with formaldehyde diffusing into the tube.The square of coloring development length of the tube is direcly proportional to the product of the formaldehyde concentration and sampling time.The detection...

A new detection tube for formaldehyde gas based on passive sampling has been developed according to the principle of the gas molecular diffusion and chemical adsorption.The tube contains inert materials impregnated with Shiffs solvation,which leads to a coloring reaction when in contact with formaldehyde diffusing into the tube.The square of coloring development length of the tube is direcly proportional to the product of the formaldehyde concentration and sampling time.The detection limit for formaldehyde is 0.015mg/L based on five hours of sampling.The method has been used for determining the concentrations of formaldehyde in formaldehyde storage rooms and particleboard workshops,with a relative error of ±10%.The shelf life of the tube is approximately three months without exposure to light.

新研制的甲醛被动式检气管是建立在气体分子扩散和化学吸收原理基础上的。检气管内的惰性担体上浸渍了对甲醛特效的希夫试剂。当管内进入甲醛气体时,即发生显色反应,检气管的显色长度的平方与甲醛浓度及采样时间的乘积成线性关系。检出下限为0.015mg/L(采样5h)。它集采样与分析为一体,结构简单,不需动力,便于携带和操作方便。应用于检测某厂刨花板车间和制胶车间的甲醛气体,与传统的注射器采样比色分析法对比,结果令人满意。检气管在避光条件下保存,保存期约为三个月。

 
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