Objective A liquid chromatography/tandem mass spectrometry (LC-MS/MS) method was developed to quantitate and confirm the presence of malachite green and leucomalachite green in water using isotope internal standard dilution technique.

Analysis of hexabromocyclododecane diastereoisomers in foods of animal origin using ultra performance liquid chromatography-mass spectrometry and isotope dilution;

Determination of dioxin like polychlorinated biphenyl residues in milk using isotope dilution gas chromatographyion trap tandem mass spectrometry;

Trace lead measurement in milk powder by isotope dilution coupled with ICP-MS and off-line removal of matrix in- terference with chelating resin column;

The method using isotopic dilution and solid phase extraction (SPE) technique was established to determine the concentration of 3-chloro-1,2-propanediol in soy sauce by gas chromatography-mass spectrography ( GC-MS).

Combining the isotopic dilution (ID) method with the on-line fractionation correction method, the rhenium content can be determined accurately at sub-nanogram level using the normal solution n.

A brief, updated introduction is given to each of the analytical methodscurrently being used in U-Th-Pb geochronology: 1) isotope dilution; 2)SHRIMP ion microprobe; 3) whole zircon evaporation; and 4) ~(210)Pb/~(206)Pbmethod.

This article briefly described the chemical measurement traceability and isotope dilution mass spectrometry that has the potential to be primary method, and also described how to provide the Si-traceable value of K in river water by the means of IDMS.

This work adopted isotope dilution mass spectrometry which international accepted primary method to accurately determine trace Pb and Cd in IMEP-6 water samples.