Measurement of Sulfate Concentrations and Tracer/Tracee Ratios in Biological Fluids by Electrospray Tandem Mass Spectrometry

Measurement of Succinylcholine Concentration in Human Plasma by Electrospray Tandem Mass Spectrometry

“…Also, a new extraction method had to be developed that would be compatible with electrospray and direct infusion inlet. Precipitation techniques such as cold acetonitrile, saturated sulfosalicylic acid solution, cold methanol (14), and trichloroacetic acid (4) were tried without success. Extraction techniques with several solid phases, such as CBA cation-exchange extraction cartridges (15) and C8 (16) and C1 cartridges (2), were also tried.…”

Biomarkers of environmental toxicity and susceptibility in autism

“…A Shimadzu Model 646 atomic absorption spectrometer was used under the following conditions: copper lamp current 7 mA; wavelength 325 nm; slitwidth, 0.38 nm; acetylene flow plate, 1.5 dm 3 /min; and airflow plate, 10.0 dm 3 /min. Free inorganic sulphate was measured by negative electrospray ionization tandem mass spectrometry [25]. First, 34 Slabeled sodium sulphate was added to the sample as an internal standard.…”

A Prospective Study of Transsulfuration Biomarkers in Autistic Disorders

“…A Shimadzu Model 646 atomic absorption spectrometer was used under the following conditions: copper lamp current 7 mA; wavelength 325 nm; slit-width, 0.38 nm; acetylene flow plate, 1.5 dm 3 / min; and airflow plate, 10.0 dm 3 /min. Free inorganic sulphate was measured by negative electrospray ionization tandem mass spectrometry [17]. To the sample 34 S-labeled sodium sulphate was added as an internal standard.…”