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41.
R. D. Voyksner W. M. Hagler K. Tyczkowska C. A. Haney 《Journal of separation science》1985,8(3):119-125
Thermospray high performance liquid chromatography/mass spectrometry (TSP HPLC/MS) was used to analyze five Fusarium mycotoxins in porcine plasma and urine. Four cytotoxic trichothecene mycotoxins, T-2 toxin, HT-2 toxin, diacetoxyscirpenol (DAS), deoxynivalenol (DON), T2 tetraol, and the fungal estrogen zearalenone (F-2 toxin) were analyzed. The thermospray mass spectrum contained molecular weight information with few, if any, fragment signals. Detection limits ranging from 1 to 10 ng of mycotoxin injected onto the HPLC column were obtained using selected ion monitoring (SIM) HPLC/MS. Neither the plasma nor the urine matrix interfered with TSP HPLC/MS analysis of these mycotoxins and no sample derivatization was necessary for the analysis. The TSP HPLC/MS technique appears to be ideal for very sensitive analysis of mycotoxins in biological samples. 相似文献
42.
We give several characterizations of those Banach spaces X such that the dual contains a complemented subspace isomorphic to . We investigate operators on separable ∞ spaces whose adjoints have nonseparable ranges and apply our results to obtain a structure theorem for ∞ spaces whose duals are not isomorphic to l1(Γ). 相似文献
43.
Brian A. Hagler 《Numerical Algorithms》2013,62(1):45-58
Algorithms for the construction of block-formed orthogonal Laurent polynomial sequences and corresponding Gaussian quadratures associated with positive definite strong moment functionals are introduced and compared. Cost estimates and numerical examples are included. 相似文献