As the thermal conductivity detector is used in the modern - gas chromatography analytical instrument , it hassome abvantages of the simple structure , wide linear determining range ang good stability 摘要在气相色谱仪中，采用热导检测器检测物质成分的浓度变化，具有构造简单、测定范围广、稳定性好、线性范围宽等优点。
2 . preparation and application of variablevalency drugs pqc sensors based on ion - pair complexes . pqc sensors obtained much higher sensitivity and wider ph range than the electrodes based on nemst equaion 来自各种药物制剂和体液中各种药物的分析结果表明，这种传感器制作简便，操作方便，灵敏度高，选择性好，线性范围一般较宽。
The result of our experiment indicated the novel biosensors exhibite excellent electrochemical characteristics to glucose with substantial improvement in sensitivity , low detection limit , stability and anti - interferer 实验证明，引入了新的电子媒介体后，该传感器的灵敏度显著提高，线性范围显著加宽，能有效的消除抗坏血酸和尿酸等的干扰。
This model uses the method of absorbance limit ( j value method ) , the method of nonlinear judgement and the same sign method comprehensively in order to obtain an accurate and reliable value of enzyme activity 这个模型综合运用了吸光度限制法( j值法) 、非线性判别法和估计线性范围的同号方法等方法，得到线性范围的吸光度变化率，用于准确计算酶活。
A review is given for progress in measuring nitrite by fluorescence spectrophotometry on the basis of the documentary of recent decade , which contains reaction system , linearity range , detection limit and the applied objects , etc 摘要根据近十年的文献资料，评述了荧光光度法测定亚硝酸根的研究进展，包括指示反应体系、线性范围、检出限、应用对象等。
Methods : its experimentative conditions , including detected wavelength , fluid medium , disposal of special specimens , linear range of methods , minimum contents , precision , accuracy , currecy and application , have been investigated 方法：对测定方法中涉及到的检测波长、流动相、操作方法以及方法的线性范围和最低检出量、精密度和准确度等方面进行实验研究。
The i - t transient model accords well with our experiments . we introduce carbon nanotubes into biosensor to improve the capability of biosenor . we found mat linear range of glucose biosensor was increased after add carbon nanotubes into the glucose oxidase solution 在以葡萄糖传感器为对象的实验中，我们惊喜地发现加入纳米碳管后，传感器的检测线性范围得到很大提高，而且检测灵敏度没有受到任何影响。
In order to overcome this drawback , the electron transfer mediators were explored , we select nathpol green b , azure , tris - 2 , 2 ' - dipyridylcobalt ( iii ) perchlorate trihydraie in glucose solution as electron transfer mediators to improve the glucose biosensor ' s sensitivities and linear scope 为了克服这个缺点，本文分别采用具有电活性的萘酚绿、天青、以及合成的co ( bpy ) _ 3 ( clo _ 4 ) _ 3放入测试底液中作为电子媒介体，提高葡萄糖传感器的灵敏度和线性范围。
This thesis consists of four chapters : ( 1 ) a review ; ( 2 ) study on the optical chemical membrane for detection of lead ion by using 2 - hydroxy - 1 - naphthaldehydene - 8 - aminoquinoline as fluorescence indicator ; ( 3 ) study on the optical chemical membrane for detection of lead ion by using meso - ( 4 - methyloxyphenyl ) porphyrin as fluorescence indicator ; ( 4 ) study on the optical chemical membrane for detection of lead ion by using 2 - methene - benzimidazole monoaza - 18 - crown - 6 as fluorescence indicator . in chapter one , the laboratory method for determination of lead ion , the progresses of chemical sensor for detection of lead ion recently and the introduction of the basic theory , relative merits of sol - gel and its application in optical chemical sensor were involved 第二章利用有机改性的溶胶-凝胶包埋方式,以2 -羟基- 1 -萘甲醛- 8 -氨基喹啉为荧光指示探针,结合正交实验方法探索了几个重要因素,如加水量、醇硅比、催化剂、添加剂等对成膜性的影响,制备了对水中铅离子有较好响应的传感膜,其线性范围为1 . 0 10 - 7 ~ 5 . 0 10 - 5mol / l ,检测限为3 . 6 10 - 8mol / l 。
Calibration graph obtained by the modified procedure for ddmbac showed good linearity and its correlation coefficient was above 0 . 999 . the coefficients of variation and average recovery of added ddmbac were up to the mustard . the linear concentration ranges for batch determination of ddmbac were 0 . 06 ~ 3 . 33mg / l 利用改进后的方法对ddmbac的测定建立了质量控制体系,其标准曲线的相关系数大于0 . 999 ,线性良好,精密度和准确度均符合检测要求,线性范围为0 . 06 ~ 3 . 33mg / l 。
