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Trace and ultratrace analysis:
The accuracy, precision and detection limits of flame AAS depend on how the analyte sample is introduced into the atomiser. We need to transfer a reproducible and representative portion of a sample into an atomiser which depends on the physical and chemical state of the analyte and the sample matrix. The sample introduction is achieved with the help of a nebuliser. The generally used nebulisation techniques are ultrasonic nebulisation, pneumatic nebulisation, electrothermal vaporisation and hydride generation.
Atomic absorption spectrophotometry (AAS) is now a routinely and widely employed technique for trace and ultratrace analysis of complex matrices of geological, biological, glass, environmental, industrial, cement, marine sediment, pharmaceutical, engine oil or any other kind of samples. An atomic absorption techniques using flame are rapid and precise and are applicable to about 67 elements. The electrothermal methods of analysis instaed are slower and less precise; thus, these are more sensitive and require much smaller samples.
rectivtiy of gillman reagent on cyclic alkyl halides is govern by what factors,,what is the product bicyclo[2,2,1] dibromide reacts with gillman reagent
Q. Explain about Neutral and Amphoteric oxides? Neutral oxides have neither acidic nor basic properties and when dissolved in water, they give neutral solutions, e.g., CO, N
how condensation being done??
Molecular Formula Molecular formula of a substance provides the actual number of atoms that present in one molecule of the substance. Molecular formula = n * Empirical fo
applications of potentiometry
Q. Show properties of the Borax? Salts of boric acids are known as borates. As said earlier, hydrated borates occur naturally, e.g., borax, Na 2 B 6 0 11 . 5H 2 0, kernite, Na
Q. What is scientific law and theory? A theory is a description that has been supported by many experiments. Theories declare broad principles of nature. Even though theories a
C3N4
how do you convert mL/s to mol/s using the colume of oxygen at satp?
Strengths of Phenols - Hydrocarbon The comparative strengths of some phenols (as acids) are like this: p-Nitrophenol > o-Nitrophenol > m- Nitrophenol > Phenol Presence of
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