How were the limits of detection calculated in Plasma Atomic Emission Spectrometer ICPE ? According IUPAC recommendations or another method?
Dear Prof. Atef El-Taher,
This article may help you; Article Determination of Phosphorus in Soil by ICP-OES Using an Impr...
Thank you Dr. Essam for your interest
I agree whit Essam Ahmed Abdel Wahab
Beginner level books. High level books. Analytical Number Theory. Algebraic Number Theory. Combinatorical Number Theory. Books about partitions. Books about primes.
03 March 2021 7,174 5 View
Hello, I have been struggling with the electroporation of PBMC with HIV-I mRNA. Although the quality of the RNA generated is good, and the handling of the cells in meticulous, the frequency of...
27 February 2021 9,233 3 View
As a beginner in electrochemistry, I tried to obtain cyclic voltamograms of commercial anatase powder deposited on an ITO substrate or on Eteck. After several attempts, I noticed that my cyclic...
23 February 2021 3,175 3 View
I have a mixture of epoxidized oil and magnesium sulfate wich type of filtre paper should i use
21 February 2021 3,944 3 View
I work on estimation of alpha amylase activity using dinitrosalisylic acid reagent If i put the reagent to stope the enzymatic reaction and allow the reagent to react with the produced reducing...
17 February 2021 7,402 4 View
the samples are not completely soluble - just swelled the solvents that's mean the sample may be partially soluble any suggestion, please
16 February 2021 8,801 3 View
There are contradictory research papers about the correlation between meteorological parameters and incidence of COVID-19 in some countries worldwide. Is there correlation between the...
15 February 2021 5,806 2 View
Are there alternatives to the Devarda alloy when estimating nitrogen? devarda alloy is reducing the nitrate to ammonium
15 February 2021 8,838 3 View
I want to conduct a proliferation assay to test a chemotherapy combination on a cancer cell line. At first, I thought about the MTT assay. But now, all sources are saying that these do not measure...
14 February 2021 3,142 7 View
Hi, A Fabry Perot Cavity allows to increase the directivity of a low gain antenna by putting in the top of cavity a superstrate with high permittivity such as a ceramic (er=10.2). However,...
09 February 2021 6,799 8 View
If the detection range is in ng/ml but the reference range is in ug/ml for a molecule or protein in serum or plasma .how to dilute and what is the initial volume to be taken for quantitative analysis
02 March 2021 7,670 3 View
The Lanthanide contraction which is the decrease in ionic radii of the elements in the lanthanide series from atomic number 57, lanthanum, to 71, lutetium, is due to poor shielding of the 4f...
01 March 2021 2,272 4 View
Is there any reason for decrease in fluorescence emission intensity of HSA,BSA when increase the concentration ?
28 February 2021 3,653 4 View
I am currently doing research on the adsorption of heavy metal using magnetic reduce graphene oxide. I use AAS to determine the concentration of the heavy metal. I prepare the Pb solution with...
26 February 2021 9,580 4 View
I am currently trying to stain for PI3KBeta in MDA-MB-231 cells. My current issue is that 1) beta stains all over the cell and 2) there is an increase in signal at the edge of the cell and this...
24 February 2021 8,582 1 View
To do liquid biopsy and look for specific gene expressions there are so many published papers. Thera are different protocols and procedures used to isolate circulating cell free RNA or mRNA from...
23 February 2021 7,326 5 View
I am using the crystallographic open database and materials project to search for cif file but the exact structure is not mentioned or how can I deduce that the given structure and atomic position...
23 February 2021 6,723 2 View
How to do acid digestion of soil sample with 3:1 aquaregia in an open vessel?
23 February 2021 3,053 7 View
I need to clean the hydrocarbon contamination on the carbon substrate of TEM grid. However, I heard that substrate could be broken by the powerful plasma. My substrate is pure carbon, with ~3nm,...
23 February 2021 3,262 5 View
Hello, i work with a spectrometer which only render the fluorescence emission spectrum. Until now i just found how to interpret an exitation- and emission spectrum together to generate deeper...
20 February 2021 1,291 3 View