The Flame Photometric Detector (FPD) allows sensitive and selective measurements of volatile sulphur and phosphorus compounds. The detection principle is the formation of excited sulphur (S2) and HPO species in a reducing flame. A photo-multiplier tube measure the characteristic chemiluminescent emission from these species. The optical fibre can be changed to allow the photo-multiplier to view light of 394 nm for sulphur measurement or 526 nm for phosphorus.
Asbestos is one of the most useful and versatile industrial raw materials nature has gifted to mankind. It is a fibrous mineral used in many different products. Different asbestos-based products possess different merits, but in every case asbestos is employed because of its unique combination of properties in one single material. Research has yet to develop a single substitute material technically equivalent to Chrysotile in many of its applications. Over the years, some alternate materials in combination have been developed as substitutes for specific applications but studies are yet to be conducted to state that these substitute materials are health-wise safe and commercially and economically viable.
To practice all areas of Analytical Instrumentation for Interviews, here is complete set of 1000+ Multiple Choice Questions and Answers. «
11. Which of the following detectors has a non-volatile bead of rubidium silicate placed above the flame tip? a) Argon ionisation detector b) Thermionic emission detector c) Flame ionization detector d) Electron capture detector View AnswerAnswer: b Explanation: Thermionic emission detector has a non-volatile bead of rubidium silicate placed above the flame tip. It is maintained at about 180V with respect to the collector.
This set of Analytical Instrumentation Interview Questions and Answers for freshers focuses on “Detection System of Gas Chromatography”.
14. Electron capture detector is much less susceptible to contamination when nickel is used instead of tritium. a) True b) False View AnswerAnswer: a Explanation: Electron capture detector is much less susceptible to contamination when nickel is used instead of tritium. The sensitivity of nickel is less than that of tritium.
13. Which of the following is not used as a heating element in a Thermal conductivity detector? a) Platinum b) Gold c) Graphite d) Tungsten wire View AnswerAnswer: c Explanation: Graphite is not used as a heating element in Thermal conductivity detector. Platinum, gold and tungsten wire are used as heating elements.
i have been working as an analytical chemist in CHEMLOIDS R&D centre in VIJAYAWADA for 4 1/2 years.I HVE AN EXP TO HANDLING INSTRUMENTS LIKE HPLC ,UV, IR,ETC.THE PHENOMENON OF ANALYSE SAMPLES PURITY & WHAT ARE THE OTHER IMPURITIES IN THEIR USING SPECTROSCOPICAL INSTRUMENTS MAY CALLED ANALYTICAL INSTRUMENTATION.TO MAINTAIN AN ANALYTICAL INSTRUMENTS IS NOT EASY LIKE OTHER TECQNICS TITRIMETRIC,GRAVIMETRIC .HERE MOST OF THE WORK RUNNIG BY MANUAL.BUT WHERE AS IN INSTUMENTATION DEVISION WE CAN CONTROL SYSTEMS BY GIVING SHEDULES TO SOME TIME EXTENT.HERE WE HAVE TO USE ONLY HPLC GRADE SOLVENTS.OTHER WISE OUR MIGHT DAMAGE.
At present working as Laboratory Executive in application & Wet laboratory, working on AAS, GC, HPLC, Spectrophotometer for the analysis of Soil, Air, water (Ground, Surface, Sewage, Industrial effluents) as well as pharmaceutical product. And report submission of samples. • Work on multitudes of aspects in the lab apart from analysis. • Analysis of Volatile Organic Carbons, PCB’s, PAH, Phenols, CO, CO2 using methanizer, FAME analysis . • Developed a perfect hand in utilization, handling and maintenance of GC (All netel manufacturing ), HPLC (Water TM 486),AAS (PerkinElmer),UV-VIS Spectrophotometer.(Thermo-Orion) • Having a Knowledge of making S.S. Columns and method development. 1.Analysis of Different Types of Raw Material, Tablets, Syrup, Perfume, Injections, Oils etc. Worked On : Gas Chromatography (MACRO 9100, Ultima-2100, Analyte-2700, Platina, (All Netal GC) HPLC – Saif Water HPLC (Double Piston Pump) Water TM 486 Tunable absorbance Detector (Single Piston Pump) IR: FTIR -410 Jasco 2.Gas Chromatography: Separation Of components from mixture using CHEMITO 8310 Gas Chromatograph 3.Spectrophotometer Mtd. Of s analysis: U.V. Visible Spectrophotometer (ELICO INDIA SL- 159), Visible Spectrophotometer (ELICO INDIA SL-171, Colorimeter (ELICO INDIA), Polarometer, Nephelometer, Florometer, Flame Photometer etc. 4.Industrial Chemical Analysis: Volumetric Analysis: Acidimetric, Alkalimetry, PPT, Redox, Complexometric, Estimation of Industrial Chemical, Ores, Minerals, Alloys & Oils etc. Physico Chemical Analysis: PH Meter, Conductometer, electrolytic analyzer, Refractometer, Say Bolt Viscometer & EC-TDS Meter etc.