NICI

TABLE 2-63 Nickel Chloride (NiCI,) TABLE 2-64 Nickel Nitrate [Ni(N03),l TABLE 2-65 Nickel Sulfate (NiSO ) ... 

D. Hainzl, J. Burhenne and H. Pariar, HRGC-ECD and HRGC-NICI SIM quantification of toxaphene residues in selected marine organism by envir onmentally relevant chloroboT nanes as standard , Chemosphere 2S 237-243 (1994). 

Figure 25. Diagram for critical potential measurement79 The sweep rate it 4 x 10-3 V s"1. [Nicy = 100 mol nf [NaCl] = 0.1 mol nf3. T= 300 K. (From R. Aogaki, E. Yamamoto, and M. Asanuma, J. Electrochem. Soc. 142, 2964, 1995, Fig. 2. Reproduced by permission of The Electrochemical Society, Inc.)...

ECD = electron capture detector GC = gas chromatography HPLC = high-performance liquid chromatography MC = microcoulometric detector MS = mass spectrometry NICI = negative ion chemical ionization RSD = relative standard deviation SPE = solid phase extraction... 

Mariani G, Benfenati E, Fanelli R. 1995. A NICI-GC-MS method to analyze endosulfan in biological samples. Int J Environ Anal Chem 58(l-4) 67... 

Each term refers to a control volume, which for a BR is the volume of the reacting system. The input of energy nicy be by heat transfer from a heating coil or jacket, and/or by generation by reaction. Similarly, the output of energy may be by heat transfer to a coil or jaded, and/or by loss by reaction. The accumulation is the nd result of the inputs and outputs, and may result in an increase or decrease in T of the reading system. 

Ali MA, Baugh PJ (2003) Sorption-desorption studies of six pyrethroids and mirex on soils using GC/MS-NICI. Int J Anal Chem 83 923-933... 

Fig. 5.4 Representative analyses of environmental samples of GC/NICI-MS-MID PCB contaminated soil from Fountain City, Wl... 

Nitrobenzene, 2,4-dinitrotoluene and 2,6-dinitrotoluene were determined in water by GC-EC or GC-CLD thermal energy analyzer (TEA) and by EI-MS, CI-MS and NICI-MS455, after solid-phase microextraction (SPME) with polydimethylsiloxane coated fiber. SPME is a technique to concentrate organic compounds dissolved in an aqueous matrix by adsorption on a solid stationary phase immobilized on a fused silica fiber. The analytes were thermally desorbed directly into the GC injector LOD was 9 pg/L for nitrobenzene and 15 pg/L for the dinitrotoluenes456. 

Low levels of nitrogen dioxide react with the polyunsaturated fatty acids under anaerobic conditions to give allylic nitro and allylic nitrite derivatives of methyl linoleate and methyl linolenate. These were identified by NICI-MS558. 

Note When a positive ion results from Cl, the term may be used without qualification nonetheless positive-ion chemical ionization (PICI) is frequently found in the literature. When negative ions are formed, the term negative-ion chemical ionization (NICI) should be used. [8]... 

Aubert, C. Rontani, J.-F. Perfluoroalkyl Ketones Novel Derivatization Products for the Sensitive Determination of Fatty Acids by Gas GC-MS in El and NICI... 

The significant enhancement of ion formation by a corona discharge as compared to a Ni source has already been implemented in early API sources. [139,140] The nature of the APCI plasma varies widely as both solvent and nebulizing gas contribute to the composition of the Cl plasma, i.e., APCI spectra can resemble PICI, CECI, NICI, or EC spectra (Chap. 7.2-7.4) depending on the actual conditions and ion polarity. This explains why APCI conditions suffer from comparatively low reproducibility as compared to other ionization methods. 

Shibata, A. Yoshio, H. Hayashi, T. Otsuki, N. Determination of Phenylpyru-vic Acid in Human Urine and Plasma hy GC-NICI-MS. Shitsuryo Bunseki 1992,40, 165-171. 

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