Start all reagents and mobile phase flowing. Once a good baseline is obtained, start injections, alternating samples and standards throughout the analysis. Measure the height of the NNG peak for standards and samples. Prepare a calibration curve. For wetcake samples find the amount of NNG in the sample from the calibration curve and the equation in section 11.
Start all reagents and mobile phase flowing. 该怎么理解和翻译?
The concentration of NNG in the sample is calculated using the weight of the sample (sample weght), the total weght of the prepared sample (total weight), and the amount of NNG injected which is found using the calibration curve (ppb NNG injection).