Instrumental analysis - Study guides, Class notes & Summaries

Instrumental Analysis ACS Exam Final With Complete Solutions 2024 What is linear range? - answerAnalyte concentration over the response that is proportional to the concentration. When analyzing an unknown where should the concentration of the unknown fall? - answerSomewhere within the linear range What should you do if the unknown concentration is below the linear range? - answerperform pre-concentration Examples of pre-concentration - answerevaporating, anodic stripping voltammetry Wha...

Instrumental Analysis ACS Final Prep Exam Questions With Correct Answers what are the difference between calibration sensitivity and analytical sensitivity - answercalibration sensitivity is the slope of a calibration curve at the concentration of interest while analytical sensitivity is a response to the noise ratio how to calculate calibration sensitivity - answery=mx+b (m is the calibration sensitivity) graph concentration vs mean analytical signal how to find the analytical sensitivit...

Instrumental Analysis ACS with Complete Questions and Answers 100% VerifiedInstrumental Analysis ACS with Complete Questions and Answers 100% VerifiedInstrumental Analysis ACS with Complete Questions and Answers 100% Verified What does sensitivity mean? - ANSWER-discriminate between small differences in concentration What does selectivity mean? - ANSWER-degree which method is free from interference of other species What does detection limit mean? - ANSWER-min. concentration/ mass of analy...

How to calculate signal to noise - Answer-S/N = mean/STDEV -inverse of RSD -STDEV: 5 (#STDEV gaussian curve) -STDEV: peak-to-peak noise/5 S/N relationships - Answer--increase S/N, increase run time -decrease noise, increase S/N Beer's Law - AnswerBeer's Law Calculations - AnswerHard ionization vs soft ionization - Answer--hard: no M+ peak (or small) -soft: M+ peak is visible MS: hard ionization sources - Answer--impart high quantities of residual energy in the subject molecule invokin...

Instrumental Analysis ACS Exam Questions With 100% Correct Answers How to calculate signal to noise - answerS/N = mean/STDEV -inverse of RSD -STDEV: 5 (#STDEV gaussian curve) -STDEV: peak-to-peak noise/5 S/N relationships - answer-increase S/N, increase run time -decrease noise, increase S/N Beer's Law - answer Beer's Law Calculations - answer Hard ionization vs soft ionization - answer-hard: no M+ peak (or small) -soft: M+ peak is visible MS: hard ionization sources - answer-i...

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Instrumental Analysis ACS Exam 2024 Questions with Answers

Instrumental Analysis ACS Exam Questions With 100% Correct Answers How to calculate signal to noise - answerS/N = mean/STDEV -inverse of RSD -STDEV: 5 (#STDEV gaussian curve) -STDEV: peak-to-peak noise/5 S/N relationships - answer-increase S/N, increase run time -decrease noise, increase S/N Beer's Law - answer Beer's Law Calculations - answer Hard ionization vs soft ionization - answer-hard: no M+ peak (or small) -soft: M+ peak is visible MS: hard ionization sources - answer-impar...