geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Acceleration of gas chromatographic determination of butyric acid by the Hadorn/Zurcher method by use of a preliminary column


, : Acceleration of gas chromatographic determination of butyric acid by the Hadorn/Zurcher method by use of a preliminary column. Mitteilungsblatt der GDCh Fachgruppe Lebensmittelchemie und Gerichtliche Chemie 26(9): 171-172

The use of a heatable preliminary column containing glass marbles and 10% diethylene glycol succinate in Chromosorb 80/100 on a Perkin-Elmer F20 gas chromatograph enabled the time of an analysis of butyric acid by the Hadorn/Zurcher method to be reduced from 45 to 10 min.

US$29.90


Other references

Busse, W.W.; Mcgill, K.A.; Horwitz, R.J., 1999: Leukotriene pathway inhibitors in asthma and chronic obstructive pulmonary disease. Leukotrienes can be generated from a wide variety of cells including mast cells and eosinophils. The biological properties of these products include bronchial smooth muscle contraction, stimulation of mucous production, enhancement of vascular per...

Hazrati, A.M.rchamsy, H., 1971: Contagious agalactia with emphasis on the diagnosis procedure in Iran. CENTO Seminar Vet Invest Diagn Methods 1970 Papers: 9-80

Harper, P.; Hynes, H., 1970: Diapause in the nymphs of Canadian winter stoneflies. Ecology er 51 (5) 925-927

Pilipavicius, V., 2008: Allelopathic effect of grounded Cirsium arvense L seeds on spring barley germination. Plant competition in a crop can start in a very early stage of development even at initial germination. From the scientific and agronomical point of view it is important to identify how weed biological active substances effect cultural plants. Ca...

Anderson, T.J.; Martin, S.; Berka, J.L.; James, D.E.; Slot, J.W.; Stow, J.L., 1998: Distinct localization of renin and GLUT-4 in juxtaglomerular cells of mouse kidney. The insulin-responsive glucose transporter, GLUT-4, is found primarily in adipocytes and skeletal muscle cells, where it is sequestered in a specialized recycling compartment, from which it can be recruited to the cell surface following insulin st...

Feng, Y.; Li, X.; Zhang, X., 2015: An adaptive compensation algorithm for temperature drift of micro-electro-mechanical systems gyroscopes using a strong tracking Kalman filter. We present an adaptive algorithm for a system integrated with micro-electro-mechanical systems (MEMS) gyroscopes and a compass to eliminate the influence from the environment, compensate the temperature drift precisely, and improve the accuracy of...

Del Moral, M.; Martinez-Lopez, F.; Pujante, AM., 1997: Study of the small streams of the Espadan mountains south west of Castellon Macroinvertebrates and water quality Estudio de los pequenos rios de la sierra de Espadan SO de Castellon Macroinvertebrados y calidad de sus aguas. A physico-chemical and biological study of the streams from the Espadan mountains (Castellon province, Spain) has been performed. 23 sampling sites were selected and sampled during autumn/winter 95 and spring/summer 95. 15 physico-chemical and 13...

Aguiar Laercio A.; Bidone Edison D.; da Cunha C.T.; Mota Lucia M.M.; da Silva J.L.S.lverio, 1984: Concentration of Na, K, Ca and Mg in intermittent lakes of the Nhecolandia region, Pantanal Matogrossense, Mato Grosso do Sul, Brazil. Resumos - Congresso Brasileiro de Geologia 33: 15

Harestad, A.S., 1991: Spatial behaviour of townsend's chipmunks and habitat structure. Habitat structure affected location of activity and choice of travel routes of captive Townsend's chipmunks (Tamias townsendii Bachman, 1839). When traveling between nesting and feeding sites, chipmunks used indirect routes with cover (boards...

Wei, Z-feng.; Lv, Q.; Xia, Y.; Yue, M-fan.; Shi, C.; Xia, Y-feng.; Chou, G-xin.; Wang, Z-tao.; Dai, Y., 2016: Norisoboldine, an Anti-Arthritis Alkaloid Isolated from Radix Linderae, Attenuates Osteoclast Differentiation and Inflammatory Bone Erosion in an Aryl Hydrocarbon Receptor-Dependent Manner. Norisoboldine (NOR), the primary isoquinoline alkaloid constituent of the root of Lindera aggregata, has previously been demonstrated to attenuate osteoclast (OC) differentiation. Accumulative evidence has shown that aryl hydrocarbon receptor (AhR...