Determination of the Total Content of Arsenic, Antimony, Selenium and Mercury in Chinese Herbal Food by Chemical Vapor Generation-Four-Channel Non-dispersive Atomic Fluorescence Spectrometry

Multielement Principal Component Analysis and Origin Traceability of Rice Based on ICP-MS/MS

“…is experiment was carried out by tandem mass spectrometry. e concentration of 30 isotopes ( 7 Li, 23 Na, 24 Mg, 27 Al, 11 B, 31 P, 32 S, 39 K, 44 Ca, 47 Ti, 51 V, 52 Cr, 55 Mn, 56 Fe, 59 Co, 60 Ni, 63 Cu, 66 Zn, 72 Ge, 75 As, 78 Se, 88 Sr, 95 Mo, 111 Cd, 115 In, 118 Sn, 121 Sb, 133 Cs, 137 Ba, and 208 Pb) in rice was determined by inductively coupled plasma tandem mass spectrometry (Agilent 8900 Series, Agilent, USA). 1 μg/mL mixed solution of Li, Y, Co, Tl, Ce, and Mg was used as the tuning solution, and 0.10 rps speed of the peristaltic pump was used to continuously feed the solution.…”

“…In the MS/MS mode, the NH 3 /He mixture gas collided with 7 Li, 24 Mg, 44 Ca, 60 Ni, 95 Mo, and 137 Ba ions in the reaction cell, H 2 collided with 23 Na, 27 Al, 55 Mn, 66 Zn, 72 Ge, 78 Se, 88 Sr, and 115 In ions, and O 2 collided with 39 K and 133 Cs ions, respectively. e interference was eliminated by in situ mass spectrometry, which means the elements only collide with the reaction gas and do not combine with each other.…”

“…e determination methods of poly element contents in rice include an electrochemical method, atomic absorption spectroscopy (AAS) [22], atomic fluorescence spectrometry (AFS) [23], inductively coupled plasma optical emission spectrometer (ICP-OES) [24], and inductively coupled plasma mass spectrometry (ICP-MS) [25,26]. However, there are some common problems in these methods, which hamper the rapid determination of trace elements in rice, thus causing the reduction of the accuracy of traceability of multielement composition in rice.…”

Analysis and suppression of scattering interference for arsenic using dispersive atomic fluorescence spectrometry based on an ultraviolet digital micromirror device spectrometer

“…Atomic fluorescence spectrometry (AFS) has been widely used in various fields for trace heavy metal elemental analysis with high sensitivity and simple instructions, notably the determination of vapor-forming elements by hydride generation atomic fluorescence spectrometry (HG-AFS), 3–7 especially trace As analysis. 8–11 The commercial HG-AFS employs a non-dispersive spectroscopic system, which cannot effectively verify or eliminate the possibly existing spectral or scattering interference, so the Environmental Protection Agency (EPA) standard only recognizes the determination of Hg by cold AFS 12 and some researchers achieved selenium preconcentration in a gold “amalgamator”. 13 To solve the above problem and meet the requirements of high sensitivity and quick detection, we developed dispersive AFS based on an ultraviolet digital micromirror device (UV-DMD) spectrometer, which consists of a UV-DMD for the spatial light modulator, a concave grating for the light splitter and a photomultiplier tube (PMT) for the detector, and successfully solved the spectral interference of the light source.…”

Simultaneous Determination of As, Bi, Sb, Se, Te, Hg, Pb and Sn by Small-Sized Electrothermal Vaporization Capacitively Coupled Plasma Microtorch Optical Emission Spectrometry Using Direct Liquid Microsampling

“…Undoubtedly, the classical hydride generation (HG)/cold vapor (CV) generation using NaBH 4 and SnCl 2 [ 11 , 12 , 13 ] combined with spectrometric methods are the most common approaches. Such examples are HG-AFS and CV-AFS [ 14 , 15 , 16 , 17 , 18 , 19 ], HG coupled with high-resolution continuum source electrothermal atomic absorption spectrometry or quartz furnace atomic absorption spectrometry (HG-HR-CS-ETAAS, HG-HR-CS-QFAAS) [ 20 , 21 , 22 ] and graphite furnace atomic absorption spectrometry (HG-GFAAS) [ 23 ]. Other ways are HG-ICP OES [ 24 ], HG-ICP-MS [ 25 , 26 ], and hydride generation laser-induced breakdown spectrometry (HG-LIBS) [ 27 ].…”