A water soluble fraction of humic acids from vertisols

Martı́n, Francisco; Sáiz‐Jiménez, Cesáreo

doi:10.1002/jpln.19731350106

Cited by 10 publications

(2 citation statements)

References 11 publications

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“…Evidence of polysaccharide is also shown in the spectrum of a water-soluble fraction of humic acid (Fig. 2C), isolated by gel filtration (13). However, the presence of homologous ion series of sulfides (34, 48 mIz), pyrroles (67,81,95 mIz), pyridine (79 mIz), benzenes (78, 106 mIz), phenols (94, 108, 122 mIz), indole (I 17 mIz), and ligninderived units (124, 138, 150 miz) with variable intensity, indicate the similarity with other soil humic fractions (9).…”

Section: Gel-filtration Column Chromatography Amino Acíd Analysis Amentioning

confidence: 69%

“…Although the application ofIR spectroscopy to soil organic matter is somewhat limited by the nature of such material which contains numerous infrared active groups that lead to extensive overlapping of individual absorptions, several bands do appear as discrete or reasonably well defined in humic compounds (13,14). For example, in such IR studies, hydrogen bonded OH groups give a broad absorption band with a maximum around 3400 cm-I , while carboxylate ions (COO-) display bands at ca.…”

Section: Gel-filtration Column Chromatography Amino Acíd Analysis Amentioning

confidence: 99%

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Geochemical properties and biochemical composition of the surfactant mixture surrounding natural microbubbles in aqueous media

1984

Deep Sea Research Part B. Oceanographic Literature Review

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Section: Gel-filtration Column Chromatography Amino Acíd Analysis Amentioning

confidence: 69%

Section: Gel-filtration Column Chromatography Amino Acíd Analysis Amentioning

confidence: 99%

Geochemical properties and biochemical composition of the surfactant mixture surrounding natural microbubbles in aqueous media

1984

Deep Sea Research Part B. Oceanographic Literature Review

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Wasserlösliche Huminstoffe in Wässern einiger Kiestagebaue der DDR

Weise

Sohr

1987

Acta hydrochim. hydrobiol.

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Forschungsstelle fur cheniische Toxikologie, LeipzigWasserlosliche Huininstoffe in IViissern einiger Kiestagebaue der DDR S7cnimary: Aft'er an explanation of the complex composition of the system of humic substances, sollie gravel deposit's are described from whose open-pit boundaries there were taken water samples, their content of components of hnmic matter having been determined. Since spectroscopic ana1pis techniques yield spectra which are difficult to analyse and have a relatively low detection sensitivity, an indirect, polarographic method was applied by which water-soluble humic Rubstances can be determined very selectively down t.o a lower liinit of 5 pgil. Thus, enrichment in water or in adsorbing colunins is not required. From the results found there are derived several statements concerning t,he occurrence of huniic substances and fulvic acids in waters and conclusions about the possible influence on t'he hardening of concrete are giren. Eirif u hruiigDie Kiese iind Sande der DDE enthalten teilweise organische Subst,anzen. Insbesondere Xylit und Braunkohle bildeii in den Sedimenten des Quartars, die eiiie wesentliche Basis der Sand-iind liiesindustrie darstellen, den haiifigsten Typ organischer S ribstnnz ( WEISE).S a c h allgeineiiier rliisicht fuhren die ill der orgnnischeii Suhstanz elithaltenen Huiuiiistoffe z a einer Verzogerung oder Tcrhinderung der Zenientliydratation bzw. Lrcgerstiittenauswn.hlIn die Untersnchiing wurden die in Tab, 1 aufgefiihrt,en Lagerstaitten cin1)ezogen. Kiese der Probe W1 enthalten I'artikel voii muinifizierteiii Holz, Xylit iiiid Braunkohle sowie PIastabfLlle u r i d \\ eitere organkche Fleste. Die N d d e ist bei Bad Duhen 8'

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