Microcolumn preconcentration and gas chromatography-microwave induced plasma-atomic emission spectrometry (GC-MIP-AES) for mercury speciation in waters

Determination of methylmercury and inorganic mercury in water samples by slurry sampling cold vapor atomic absorption spectrometry in a flow injection system after preconcentration on silica C18 modified

“…Several complexing solid sorbents have been applied to online preconcentration of mercury species from natural water samples using different detection techniques [2,3,6,7]. Thus, sulphydryl cotton permitted to retain methylmercury, ethylmercury and inorganic mercury, which were then eluted with 3 mol dm −3 hydrochloric acid [6,7].…”

“…Thus, sulphydryl cotton permitted to retain methylmercury, ethylmercury and inorganic mercury, which were then eluted with 3 mol dm −3 hydrochloric acid [6,7]. Emteborg et al [8] incorporated a microcolumn of dithiocarbamate resin in a FI system to preconcentrate mercury species, being used acidic thiourea as eluent.…”

Acoplamento cromatografia gasosa - espectrometria de absorção atômica em estudos de especiação: uma revisão

“…A maior parte dos sistemas visa o acoplamento direto da cromatografia, em linha, a técnicas de detecção diversas, como AAS, ICP-MS [10][11][12][13][14][15][16][17][18][19][20][21] , ICP-AES 10,22-29 , AFS30, MIP 10,21,[31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46] etc. Ou seja, os diferentes equipamentos relativos a essas técnicas analíticas tornam-se os detectores, postados à saída da coluna de separação.…”

A comparison of alkyl derivatization methods for speciation of mercury based on solid phase microextraction gas chromatography with furnace atomization plasma emission spectrometry detection

“…13,[21][22][23][24][25] De Smaele et al 26 reported the use of sodium tetrapropylborate (NaBPr 4 ) as a derivatization reagent and it has subsequently been used for mercury speciation 4,11 as well as organotin and organolead speciation. 27 Both NaBPh 4 and NaBPr 4 are commercially available and combine two major advantages: ease of handling for in-situ derivatization and extraction, and the possibility of distinguishing between ethyl-and inorganic mercury and lead derivatives.…”

“…Phenylation using sodium tetraphenylborate (NaBPh 4 ) was proposed by Luckow and Russel 20 as a means for achieving direct phenylation of Hg 21 and MeHg 1 in aqueous solution.…”