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- A box arrives from an instrument vendor with the new HPLC system your company ordered. You have been asked to unpack the box so the instrument can be installed. As you unpack, you find a component that was apparently incorrectly included in the shipment. Which is the incorrect component? computer hardware and interface cables injection valve solvent mixing cell flame ionization detector absorbance detector with a low volume liquid cell software for instrument operation and data analysis stainless steel column packed with microparticulate silica that is chemically modified solvent degasser high pressure solvent pumpsFT-IR technique can be utilized for the analysis of unknown analytes by matching it with__________. Both choices are correct Commercial library/database Reference standardWhat part fo chromatography is being descibe by the following? a phase that is fixed in place either in a column or on a planar surface a phase that carries the analyte mixture The portion of the mobile phase, which carries the sample components through the staionary phase combination of the mobile phase and the separated analyte out of the stationary phase A. eluate B. Stationary phase C. mobile phase D. eluent
- You are developing a Ca detection method for a graphite furnace AA instrument. Your analysis of ten blank samples gives a standard deviation of 0.265 ppb. To establish your limit of detection (LOD), what concentration of Ca should be spiked into your blanks?Match the given parts with the correct function integrator detector injection port column solvent reservoir A. measures absorbance data B. introduce micro sample into the instrument C. holds as the stationary phase D. holds as the mobile phase E. processes data into the display unitCan you please fill the rest of tghe data based on the on inforamtion you have and answer Average percent by mass of acetic acid in vinegar sample (%) ________________ Standard deviation of percent by mass of acetic acid in vinegar sample (%)
- Write down three possible applications of the analytical ultracentrifugeWhat is the actual or real-life application of electrogravimetric analysis? Include the specific methodology.Given the following:Feed weight = 1 kgFeed grade = 16 grams per tonConcentrate Weight = 126.03 gConcentrate Grade = 0.0158%Recovery = 23%Provide the formula on how the Recovery was calculated.
- 5.00 mL of stock solution is diluted to 25.00 mL, producing solution ALPHA. 10.00 mL of solution ALPHA is diluted to 25.00 mL, resulting in solution BETA. 10.00 mL of solution BETA is then diluted to 25.00 mL, producing solution GAMMA. dilution factor for ALPHA from stock solution = 0.167 dilution factor for BETA from ALPHA solution = 0.0476 part c and d?Which statements are NOT true regarding chromatography? I The stationary phase is typically a liquid bonded to the inside surface of a capillary or the surface of solid packed in the column.II The mobile phase entering the column is the eluate.III Mobile phase is the solvent (gas or liquid) that moves through the column.IV Eluent is the process of passing mobile phase though a column.V Columns are either open tubular or packed. A. II and IV B. I, II, and III C. I, IV, and V D. I and V E. III and VMercury intoxication could cause tremendous harmful impacts to human, particularly nervous system and kidney. Ireland food safety authority has set the maximum level of mercury in fishery products at 0.5 ppm. Yvonne conducted elemental analysis on lobster. A 0.5 g piece of lobster meat (dry weight) was acid digested and made up to 10 mL solution. This solution gave an absorbance of 0.51 with the calibration graph as below. Suggest asuitable analytical instrumental technique to detect mercury content. Using the calibration graph below, estimate actual concentration of mercury and comment whether this lobster is safe for human consumption.