ed hardy sale On the three new spectrophotometric

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About three new views of spectrophotometry


Effectiveness of the law, often used by far more than the standard sample measured by the number of samples, and a large number of samples because of insufficient sample rather than using the standard spectrophotometric determination. Given this situation, we can according to (5) proposed a After several years of trial, when the Content of both standard samples determined by two straight line to look up,ed hardy sale, you can also c. ,, A, A,ed hardy jeans, A into (7) calculated between the two results are basically the same. 2.2 Spectrophotometric established to carry out the work of new ideas in the past proposed a new spectrophotometric method, often to determine A = s6c the According to For example, known spectrophotometry Ls = 15em · Ixg · ml ~ ~ 141cm · Ixg'ml, was elected with b = 3em the cuvette,ed hardy uk, the system △ = 5l ~ g/ml-47Ixg/ml. Therefore, the use of the method was determined on the specimen, the amount of chromium in the sample 1.0% to 2.0%, the sample should be weighed 0.200g, made 100mlCr solution, then the concentration of 20ixg/ml -40Ixg/ml, only to meet the requirements. For chromium 0.05% to 0.5% of steel, made even weighed 0.200g 100ml solution, the concentration of only 1Ixg/ml ~ 10Ixg/ml, lower than 5Ixg/ml. Then you need to use the Table 2 for the values ​​obtained from two standard 0.0940.2900.4l9 straight line set the value of Richard 0. O930.2900-42l result of the determination of chromium impurities. Table 2 The results indicate that the IJs in the range of spectrophotometric determination of the amount of range results are accurate and reliable. 2.3 wavelength of incident light the significance of a single non-Lambert-Beer's law requires spectrophotometry of a single wavelength of incident light must be monochromatic, otherwise it will deviate from this law. Although this is an idealized, but it is a single wavelength of incident light in the endless pursuit of, resulting in practical colorimeter for the rejection. The wavelength monochromatic light. This shows that we can be a variety of materials, as the incident with multiple filter selector to create a variety of materials, This practical photometer, both direct-reading spectrometer,ed hardy perfume, 2.4/5- = 0.66R photometric instrumentation inspired new ideas for instrumental analysis usually considered fast, but precision is not high, but according to / 5 -= 0.66R, R can be increased by reducing the poor determination of precision,ed hardy shop, control of the same batch number of factors determine the Clearly, the only instrument to ensure / 5 -= 0.66R that determine the level of precision the key is the This understanding, in the actual measurement management, measurement tests are essential.

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