Verfahren zur Reinigung von n-Pentan für die Gaschromatographie insbesondere mit EC-Detektoren

Bätjer, K.; Faust, Jürgen; Gabel, B.; Koschorrek, M.; Lahl, Uwe; Lierse, K.; Stachel, Burkhard; Thiemann, Wolfram

doi:10.1007/bf02262454

Cited by 7 publications

(3 citation statements)

References 1 publication

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“…Different solvents have been proposed for the liquid-liquid extraction of nonpolar substances of water samples: n-hexane, cyclohexane (1), and n-pentane (4). As solvent losses might occur in the on site mode because of the modification of the extraction apparatus, we chose n-pentane as a solvent (5) in order to be sure that our procedure was reliable. Even in the summer days (temperature 26-28 °C), after 11 days of extraction, solvent losses did not exceed 20%. Method.…”

Section: Methodsmentioning

confidence: 99%

“…Methods have been proposed to estimate free cyanide in an aqueous sample by using the Roberts and Jackson distillation procedure (4), a microdiffusion cell (5,6), or a gaspermeable membrane (7) to isolate and concentrate HCN in dilute alkali. These methods, however, require acidification of the sample with the conversion to HCN of simple cyanides and most likely some portion of certain metallocyanides.…”

Section: Literature Citedmentioning

confidence: 99%

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On site continuous liquid-liquid extraction of nonpolar organic compounds in water

Stachel¹,

Baetjer²,

Cetinkaya³

et al. 1981

Anal. Chem.

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Section: Methodsmentioning

confidence: 99%

Section: Literature Citedmentioning

confidence: 99%

On site continuous liquid-liquid extraction of nonpolar organic compounds in water

Stachel¹,

Baetjer²,

Cetinkaya³

et al. 1981

Anal. Chem.

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“…After its discovery, laboratories of water supply systems throughout the world conducted studies to test their presence in their waters. Early studies in both Bremen and Barcelonawhose river waters suffered from the salinization of potash mines-confirmed high concentrations of THMs [67,72]. In both cases, concentrations of bromides originating in the potash mines were identified as precursors contributing to THM formation [67,72].…”

Section: (B) Salinization and Human Health In The Llobregat Catchmentmentioning

confidence: 99%

Naturalizing pollution: a critical social science view on the link between potash mining and salinization in the Llobregat river basin, northeast Spain

Gorostiza

Saurı́

2018

Phil. Trans. R. Soc. B

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The scientific literature distinguishes between primary or natural and secondary or human-induced salinization. Assessing this distinction is of vital importance to assign liabilities and responsibilities in pollution cases and for designing the best policy and management actions. In this context, actors interested in downplaying the role of certain drivers of human-induced salinization can attempt to neglect its importance by referring to natural salinization, in a similar fashion to other pollution and health-related cases, from tobacco smoke to climate change. Potash mining, which has experienced continued growth during the last decades and is a significant contributor to salinization, is prone to originate such controversies because natural salinization from the saline geological catch can be mixed with salinization produced by mining waste such as brines and mine tailings, thus obscuring the distinction between causes. By reviewing the long-standing social and environmental conflict caused by potash mining in a region of Mediterranean climate—the Llobregat river basin—in this article, we highlight the importance of the impacts of salinization on human health and provide a critical social science perspective on salinization processes.This article is part of the theme issue ‘Salt in freshwaters: causes, ecological consequences and future prospects’.

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Trihalomethane im Trinkwasser

Puchert¹,

Prösch²,

Wagner³

1987

Acta hydrochim. hydrobiol.

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S70t) ML~IJ: I n t,iiree watrr works inyestigations \\-ere perfornied on the formation of lialogenat,ed lipdrornrbons resulting froin c.lilorinat'ion and the results are siren. There were exclusively detected Ji;~logenated niet'liane voniponnds with concentrations below 35 :~g / l and therefore agreeing with volnes already reported. 'I'~i~~!iloro~iitronlethane was detectrd, too; its c.onrriitration correlatt~s \r.ith the nitrite content of water. EinfiihrungSeit ROOK 1974 erkannte, daW die Chlorung voii organisch belasteteni Wasser voii einer Haloformbildiing begleitet wird, sind international eine Yielzalil voii Uritersnchungen zur Belaet ung von Triiikwasser mit leichtfluchtigeii Halogenkohlenwasserstoffeii (LHKW) durchgefuhrt worden (BATJER et al. ; SCHOSSNER, SONTHEIMER und KUHN ; EPA-Studie). Die hygienisch toxikologische Bemertung dieser Substaiizklnsseii ist noch iiinstritten (SELENKA iuid BAUER; UEHLEKE). Trotz der damns folgenden Aktiialitat haben sivh in der DDR hisher iiiir KOCH und STOTTMEISTER unter umwelthygienischer Sicht niit dieser Probleinatik befafit. Auf Grund der Unsicherheiteii bei der Bewertnng des hygienischen Risikos diese-Verbindungsklasse stand die Aufgabe, irn Rahnien einer epidemjologischen Studie zum Gesn~idheitszustaiid von Schnlkinderii gegeniiber Uinweltschadstoffen, die

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Verfahren zur Reinigung von n-Pentan für die Gaschromatographie insbesondere mit EC-Detektoren

Cited by 7 publications

References 1 publication

On site continuous liquid-liquid extraction of nonpolar organic compounds in water

On site continuous liquid-liquid extraction of nonpolar organic compounds in water

Naturalizing pollution: a critical social science view on the link between potash mining and salinization in the Llobregat river basin, northeast Spain

Trihalomethane im Trinkwasser

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