Write the names of four main GC detectors (titles only). Which one of these detecte used on its own as a specific and separate characterization method? Name the parts of the instrument which is illustrated as a diagram below. E A
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- 7 determination of sodium, potassium and calcium in water samples by ICP-OES. 1. kindly assist me with discussion in the experiment 2. results of the experiment 3 experimental/ methodologyGive a detailed description of how these both analytical separation protocol will be employed to recover river bodies from heavy metals and particulate matter. I. Centrifugation II. Chemical precipitationWrite the names of four main GC detectors (titles only). Which one of these detectors is used on its own as a specific and separate characterization method?
- 4.Discussed the Purposed of the Golden rules in the practice of Forensic Chrmistry.M (2022-23) Unit 1: Mole Concept, Unit 4 (FR) (Version 2) Assessment: Chemical Reactions 0.90 0.80- 0.70- 3 0.60 0.50- 0.40- 0.30- Absorbance 2. To spectrophotometrically determine the mass percent of cobalt in an ore containing cobalt and some inert materials, solutions with known [Co²+] are prepared and the absorbance of each of the solutions is measured at the wavelength of optimum absorbance. The data are used to create a calibration plot, shown below. 0.20 0.10- 0.00+ ㅏ 0.005 0.010 34 0.015 Concentration (M) .04 co₂ 100- pertoc A 0.630 g sample of the ore is completely dissolved in concentrated HNO3(aq). The mixture is diluted with water to a final volume of 50.00 mL. Assume that all the cobalt in the ore sample is converted to Co²+ (aq). (a) What is the [Co²+] in the solution if the absorbance of a sample of the solution is 0.74 ? (b) Calculate the number of moles of Co²+ (aq) in the 50.00 mL solution. (c) Calculate the mass percent of Co in the 0.630 g sample of the ore. Answer…Why is strict implementation of LQMS (Laboratory Quality Management System) or GLP is necessary ? What are the elements ?
- Continued... 5. Answer ALL parts of this question The stability of chloramphenicol in eye drops is being studied at different temperatures and times. The concentration (in mg/L) of chloramphenicol at three different temperatures over time is provided below. Time (day) -18°C 25°C 40°C 25 28 23 7 27 20 20 30 20 21 20 180 23 25 19 (a) Using the data in the tables below assess and explain if the reaction time (after 1 hour of the start of the reaction) was an important factor affecting the yield of the reaction and provide the null hypothesis of the statistical test carried out. (b) The amount of chloramphenicol at -18 °C seems to vary with some values appearing to be higher than others. Explain what may be causing this variation AND suggest a methodology to identify if there was a systematic error in the measurement. ||Analyte may be lost at the ashing stage volatile hydride generated by the reaction that occurs is swept into the atomization chamber by an inert gas, where it undergoes decomposition. detection limits by a factor of 10 to 100 compared to alternative methods v limited to only the determination of mercury.In your own analysis, give justification of this order or rank of personal identification techniques which are Fingerprint Identification followed by DNA Profiling, Bertillon System, Portrait Parle, and lastly Forensic Odontology, according to their accuracy
- * Question Completion Status: QUESTION 1 CHEMOMETRICS (a) Define the following terms: Determinate errors (i) (ii) Indeterminate errors (iii) Name and discuss sources of (i)Many rivers in Ghana are affected by illegal small-scale mining. Studies have revealed extremely high deposits of heavy metals and participate matter in rivers, making them unwholesome for drinking. With your knowledge on analytical separation and analysis, outline a suitable analytical separation protocol that can be employed to recover polluted river bodies and make them wholesome for drinking.(b) Based on the perfomance and validation methods, explain the distinctions between the two tems listed below: (1) linearity and coefficient of detemination (ii) intra-day and inter-day precision (ii) absolute recovery and relative recovery (iv) limit of detection and limit of quantification (v) selectivity and specificity