Applicability of solid-phase microextraction combined with gas chromatography atomic emission detection (GC-MIP AED) for the determination of butyltin compounds in sediment samples

Abstract

The performance of solid-phase microextraction (SPME) applied to the determination of butyltin compounds in sediment samples is systematically evaluated. Matrix effects and influence of blank signals on the detection limits of the method are studied in detail. The interval of linear response is also evaluated in order to assess the applicability of the method to sediments polluted with butyltin compounds over a large range of concentrations. Advantages and drawbacks of including an SPME step, instead of the classic liquid-liquid extraction of the derivatized analytes, in the determination of butyltin compounds in sediment samples are considered in terms of achieved detection limits and experimental effort. Analytes were extracted from the samples by sonication using glacial acetic acid. An aliquot of the centrifuged extract was placed on a vial where compounds were ethylated and concentrated on a PDMS fiber using the headspace mode. Determinations were carried out using GC-MIP AED.

Cold vapor-solid phase microextraction using amalgamation in different Pd-based substrates combined with direct thermal desorption in a modified absorption cell for the determination of Hg by atomic absorption spectrometry

“…Different procedures have been developed for the determination of organometallic and inorganic compounds of tin, mercury, selenium, arsenic, lead, manganese and other metals [20][21][22][23][24][25][26][27][28][29][30][31]. Mercury is one of the most toxic elements impacting on human and ecosystem health and therefore is one of the most studied environmental pollutants.…”

Application of Gas Chromatography–Atomic Fluorescence Spectrometry Hyphenated System for Speciation of Butyltin Compounds in Water Samples

“…[6] In order to monitor and assess the contamination of organotin species, various methods have been developed for speciation analysis of organotin in environmental and biological samples. [7] Compared with high performance liquid chromatography (HPLC), gas chromatography (GC) is preferred for the separation of butyltin compounds due to its large resolving power and ability to be coupled with different detectors, including electron capture detector (ECD), [8,9] flame ionization detector (FID), [10] atomic absorption spectrometry (AAS), [11][12][13] flame photometric detector (FPD), [14][15][16][17][18] microwaveinduced plasma atomic emission spectrometry (MIP-AES), [19,20] and inductively coupled plasma mass spectrometry (ICP-MS). [21][22][23] Although FPD, MIP-AES, and ICP-MS are very sensitive and commonly applied for organotin speciation analysis, the selectivity of FPD is poor, and the instruments of MIP-AES and ICP-MS are still expensive.…”

Pharmacokinetic Study of Di-Phenyl-Di-(2,4-Difluobenzohydroxamato)Tin(IV): Novel Metal-Based Complex with Promising Antitumor Potential

“…Several methods have been reported for the determination of organotin compounds, including HPLC-MS [9, 10], HPLC-ICP-MS [10, 11], GC [12], GC-MIP AED [12–14], GC-MS [15–17], GC-ICP MS [18, 19], and so on. However, these methods have obvious disadvantages.…”