Continuous measurement of volatile organic chemicals in natural waters

Environmental applications of membrane introduction mass spectrometry

“…71 The concentration levels of the hydrocarbons ranged from <0.1 µg l 1 to 90 µg l 1 in the samples, and the analytical results were in good agreement. However, the comparison was not a profound study of the characteristics of the methods.…”

“…70,71 A transportable MIMS system was constructed and mounted in a boat, and measurements were made continuously while the boat was travelling along the canal. MIMS has also been used on-site for the analysis of ground water 72 and during waste water monitoring.…”

Comparison of analytical performances of a micro‐array quadrupole instrument and a conventional quadrupole mass spectrometer equipped with membrane inlets

“…The method provides high sensitivity without any sample preparation. In recent years, MIMS has been extensively used for both laboratory3–6 and on‐site analysis7–11 of environmentally significant compounds. Although several kinds of membrane inlets have been reported,12 the direct flow‐through membrane inlets13,14 appear to be the most suitable for on‐site environmental applications because of their simplicity and high sample throughput.…”

Process Analytical Chemistry—Application of Mass Spectrometry in Environmental Analysis: An Overview

“…Aggerholm and Lauritsen described the use of chemical ionization and introduction with a membrane for numerous polluting species in waters (127). Harland et al (128) described a membrane interphase for use with a quadrupole mass spectrometer for the continuous measurement of VOCs traces in water. MIMS has been used by Choudhury et al (129) to detect aldehydes of low molecular weight in water solutions at ppb levels by aldehydes derivation in the water phase with O-(2,3,4,5,6-pentaflurobencyl)hydroxylamine and electron capture detection.…”