Simultaneous determination of methyl-, ethyl-, phenyl- and inorganic mercury by cold vapour atomic absorption spectrometry with on-line chromatographic separation

Critical review of analytical methods for determination of inorganic mercury and methylmercury compounds

“…HPLC has an advantage over G C in that formation of volatile derivatives is not necessary .33. 43 The volatile products formed by reactions with NaBEt, or NaBH, can be separated in several phite carbon column, gold column and Cry-PC"." or Cry-PC alone.14 Hg" (Eqn [4]), MeHgH (Eqn [7]), and Me,Hg from the NaBH, reaction can be separated on a Cry-PC.…”

Speciation analysis of mercury in seafood by using high-performance liquid chromatography on-line coupled with cold-vapor atomic fluorescence spectrometry via a post column microwave digestion

“…Stock solution of standard inorganic mercury (1 mg ml −1 as Hg) was prepared by dissolving appropriate amount of HgCl 2 (MC, Merck-Schuchardt) in 5% (v/v) HNO 3 . Stock solutions of standard organomercury chloride (1 mg ml −1 as Hg) were prepared by dissolving appropriate amounts of methylmercury chloride (CH 3 HgCl, MMC), ethylmercury chloride (C 2 H 5 HgCl, EMC) and phenylmercury chloride (C 6 H 5 HgCl, PMC) (Merck-Schuchardt), respectively, in methanol.…”

“…However, UV detector as a common HPLC detector often gives relatively poor sensitivity towards inorganic and organic mercury [2]. Recently, analytical methods based on HPLC on-line or off-line hyphenation with element-specific detection methods such as atomic absorption spectrometry (AAS) [3], inductively coupled plasma mass spectrometry (ICP-MS) [4] have been used as routine techniques. Although the cold-vapor atomic fluorescence spectrometry (CVAFS) offers simple, sensitive and cost-effective operation, it has not been used as a universal detector for the speciation analysis of mercury compounds yet.…”

Extractive Spectrophotometric Determination of Trace Hg (II) in Eye Drops and Ayurvedic Medicines Using Pyridine 2-Carboxaldehyde 2-Hydroxybenzoylhydrazone

“…All these findings cause great concern regarding public health, demanding an accurate determination of this metal ion at trace and ultra-trace levels. Methods for mercury determination include colorimetry, atomic absorption spectroscopy (AAS), atomic emission spectroscopy (AES), cold vapor atomic absorption spectroscopy (CVAAS), cold vapor atomic fluorescence spectroscopy (CVAFS), polarography, potentiometric titration, neutron activation analysis, gas chromatography (GC) and high-performance liquid chromatography (HPLC) [8][9][10][11] . The assessment of environmental impact, predictions of mobility of mercury in the environment or evaluation of concentrations in removal technologies require the speciation of the element.…”

“…Therefore, considerable efforts have been made to develop accurate, fast and reliable methods for the determination of mercury and its derivatives. Various analytical methods and reagents was used for mercury determination that includes colorimetry, atomic absorption spectroscopy (AAS), atomic emission spectroscopy (AES), cold vapour atomic absorption spectroscopy (CVAAS), cold vapour atomic fluorescence spectroscopy (CVAFS), polarography, neutron activation analysis, gas chromatography (GC) and high-performance liquid chromatography (HPLC) [8][9][10][11][12][13][14][15][16][17] . Similarly, reagents like 1-(1H-benzimidazol-2-yl) guanidine (GIB), (Sensing of mercury(II) using 1-(1H-benzimidazol-2-yl) guanidine as chromophore 18 , Poly(2-aminothiazole) (Synthesis of Poly(2-aminothiazole) for Selective Removal of Hg(II) in Aqueous Solutions 19 , 2-octylaminopyridine (2-OAP), Extraction and separation of mercury(II) from succinate media with high molecular weight amine as an extractant 20 , have been explored recent time.…”