why is an electro thermal atomizer more sensitive than flame atomizer?

Q: Why are some of the detectors listed unsuitable for HPLC?

A: HPLC  is applicable for the use with solvent that has UV absorbance. A UV detector cannot be used…

Q: 1. What is drying to a constant weight? 2. Aside from sieving, what other methods are used to…

A: The detailed solution is shown below.

Q: Why is a filter paper preferred over a sintered glass filter

A: Filtration is a method used to distinguish solids from liquids or gases, using a filter medium that…

Q: Smaller particles affect HPLC column efficiency in what ways? A)increase the mass transfer term.…

A: High performance liquid chromatography or HPLC is an analytical technique used to identify and…

Q: What is the hottest part of the flame in a bunsen burner when doing a colorimetric flame test?

A: The hottest part of Bunsen burner which is found just above the tip of the primary flame reaches…

Q: Calculate the Re value for a spot in a TLC experiment if the solvent moved 14.5 cm and the spot…

A: Given  Distance moved by solvent =  14.5 cm  Spot of Compound moved  from the origin = 6.1 cm  Rf =…

Q: Identify some advantages and limitations of using HPLC, and explain

A: When organic mixtures of compounds are nonvolatile, thermally not stable, and have high molecular…

Q: show the instrumentation of HPLC providing a schematical representation ?

A: Instrumentation:-

Q: What is Low-excess-air firing (LEA)?

A: Given: Low-excess-air firing (LEA)

Q: describe, including a diagram, the mechanism of retention for reversed phase hplc and normal phase…

A: The sim is to explain the mechanism of retention for reversed phase and normal phase HPLC technique.…

Q: What is the purpose of the internal calibration mass at the upper left in the electronic balance

A: In chemistry the accurate measurement of mass is needed for performing titrations, reactions. For…

Q: CS Scanned with CamScanner a mechanism. to

A: This Reaction is between grignard Reagent and the epoxide  In this reaction the grignard reagent is…

Q: How can band broadening be reduced in HPLC Eddy Diffusion? A. use smaller particles for stationary…

A: HPLC is based on the principle where the sample (analyte) is distributed between a mobile phase…

Q: What factors influence the partition coefficient in liquid-liquid extraction and how do they affect…

A: The partition coefficient in liquid-liquid extraction is influenced by various factors, including…

Q: Can an HPLC run be stopped during operation without impairing the separation

A: HPLC- High performance liquid chromatoghraphy It consists of two phase .One is stationary phase and…

Q: Indicate which other analytical techniques TGA can be coupled with and what would be the advantages?

A:

Q: 00 It holds the sample and has a defined pathlength. It provides electromagnetic radiation in the…

A:

Q: Why is catalytic dewaxing not considered as a separation process?

A: Since Catalytic dewaxing involves breaking and making bonds, so it is usually referred to as a…

Q: What safety precaution are needed when working with  a.) centrifuge  b.) Inductively Coupled Plasma…

A: a) safety precaution are needed when working with Centrifuge: Safety cups have to be used. The…

Q: Why is flame atomisation not very efficient when compared to other atomization methods?

A: A question based on analytical process that is to be accomplished.

Q: Enumerate and describe the signs of emulsion instability. At least 5-7

A: Emulsions are combinations of two or more types of liquids, one of which is spread throughout the…

Q: 6. Give one advantage of contact printing over proximity printing. Give one disadvantage of contact…

A: The following answers provide explanations to various questions related to semiconductor processing,…

Q: Find the weighted adjacency matrix of the following direted graph and represent that as a CSR-marix.

A: Weighted Adjacency Matrix: It is 2-D array which represents a data structure which can say that…

Q: (b) Based on the performance and validation methods, explain the distinctions between the two terms…

A: Interpretation - As you already mentioned in the question that you want answer only  question iii,…

Q: Chemistry Yes or No: Topic - HPLC 1.We need the void time so that we have a measure of the retention…

A: Concepts of HPLC.

Q: Is standardization against primary standard required for controlled potential coulometry ?

A: Controlled potential coulometry, as the name suggests, is a coulometry method that measures the…

Q: The eluent is to be below the 1.5 cm line on the chromatographic paper. Describe the expected…

A: Introduction- Thin layer chromatography(TLC) is a separation technique where the compounds are…

Q: It is acceptable to draw the TLC spotting line with a pen as long as it is marked very lightly.…

A: False

Q: How resolution in HPLC analysis can be improved?

A: HPLC i.e  high-performance liquid chromatography is an analytical method which is being used to…

Q: Calculate the Rf value of a spot if it travelled 1.5 cm while the solvent travelled 2.5 cm. Express…

A: Given :  1. Spot distance = 1.5 cm  2. Solvent distance = 2.5 cm

Q: Explain the working of air stripping system?

A: To find: The working of air stripping system

Q: Point out TWO (2) strategies to increase selectivity in solid phase extractions.

A: A question based on analytical separations that is to be accomplished.

Q: Silica gel is very polar stationary phase. Therefore, more polar molecule sticks to silica gel on…

A:

Q: 21 Select all the components that are part of a ICP-MS (as discussed during lectures) analytical…

A: Inductively coupled plasma mass spectrometry (ICP-MS) is one type of mass spectrometry which uses an…

Q: atomic absorption.

A: Atomic absorption spectroscopy is a spectroanalytical technique used for the quantitative…

Q: For each of the following statements, answer TRUE or FALSE and explain your answer briefly.   It…

A: True Potassium Dichromate solutions (235 - 430 nm)The most widely recognised reference material for…

Q: In HPLC, why is purging or initialization being done before analysis of samples, explain.

A: ✓basically following two reasons for using purging and initialization during HPLC sample preparation…

Q: describe different type of degasser in HPLC system, and why degassing is important in the middle of…

A: Degasser is  very useful in HPLC .the main use of degasser in HPLC are  hellium sparging, sonication…