Dogfish muscle analysis

The speciation of arsenic compounds, using IPC and ICP-MS as a detector, has received much attention [33-39]. Beauchemin et al. [33,34] used IPC for the analysis of arsenic species in dogfish muscle. The ion-pair reagent was 10 iM sodium dodecylsulfate in a 5% methanol, 2.5% glacial acetic acid mobile phase at pH 2.5 with a C18 column. The toxic inorganic species, As (III) and As (V), as well as the less toxic organoarsenic species, monomethylarsenic (MMA), dimethylarsenic (DMA), arsenobetaine (AB), and arsenocholine (AC), were separated. AB was the dominant species and constituted 84% of the total arsenic concentration with a detection limit of 300 pg (as As). 

Figure 4.18. Three-dimensional graph for Cd in the DORM-1 Dogfish Muscle CRM in the vicinity of the 228.805 nm line pyrolysis temperature 700°C, atomization temperature 1600°C Ir permanent modifier direct solid sampling analysis.

Other important work involves the analysis and classification of certified reference materials on the environment produced by standards organizations such as NIST (National Institute of Standards and Technology) and NRC (National Research Council of Canada). Some of these standards include drinking water, river water, open-ocean seawater, coastal seawaters, estuarine waters/sediments, freeze-dried dogfish/ muscle tissue, spinach/orchard leaves, and many, many more. These reference materials are often analyzed using isotope dilution methods (refer to Chapter 13), because traditional external calibration typically does not offer high enough accuracy. ... 

Figure 8.34 Time-resolved absorbance spectrum obtained for DORM-1 Dogfish Muscle reference material in the vicinity of the cadmium resonance hne at 228.802 nm pyrolysis temperature 800 °C atomization temperature 1600 °C iridium as permanent modifier direct solid sample analysis...

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