{"refrec":{"BRefID":13271,"RR":"<b>Tollenaar, P.</b> (1969). Nitraat en nitriet analyses van het Noordzeewater in augustus en november 1968. <i>NIOZ-rapport</i>, 1969(8). Nederlands Instituut voor Onderzoek der Zee: Texel. 9 pp.","BEntID":13271,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":0,"RefStringPartII":". <i>NIOZ-rapport</i>, 1969(8). Nederlands Instituut voor Onderzoek der Zee: Texel.  9 pp.","DocTypID":13,"DocType":"Reports","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Tollenaar, P.","OrigTitleTranslFlag":1,"Authorstringtrunc":"Tollenaar, P.","Englishabstract":null,"AbstractOtherLang":"Voor onderzoek naar NO<sub>3</sub>-N en NO<sub>2</sub>-N gehaltes in zeewater, die een nader inzicht kunnen geven in primaire produktie, watervervuiling en watermassa's, bestaan meerdere analysemethoden. De hier toegepaste was die van Wood, Armstrong en Richards, gemodificeerde methode van Morris en Riley, met verkoperd cadmium als reductor. Aan te bevelen hierbij is het gebruik van gevijlde Cd-krullen boven de in de handel zijnde Cd-korrels, daar met Cd-krullen aanzienlijk betere resultaten werden verkregen. In plaats van 3- 4 l oplossing met 60/ugat NO<sub>3</sub>-N/l, om de Cd-Cu te prepareren voor de juiste mate van reductie met een constante waarde, moet 8- 10 l worden gebruikt of een oplossing met groter concentratie NO<sub>3</sub>-N/l. Alvorens te gaan meten moet de optimale doorloopsnelheid worden gezocht en deze moet worden gehandhaafd tijdens de metingen. Bij de Griess diazotering methode is de kleuring enigszins afhankelijk van de tijd.","BibLvlCode":"MS","StandardTitle":"Nitraat en nitriet analyses van het Noordzeewater in augustus en november 1968","OrigTitleLangCode":"nl","OrigTitleLangCodeExtended":"dut","OrigTitleLangID":41,"DateLastModified":{"date":"2025-07-22 01:33:06.175990","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":null,"MonPub":1969,"DateUpdate":"2025-07-15","DateCreate":"2001-07-13","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":1},"refs":null,"anarec":null,"monrec":{"MonID":13271,"ISBN":null,"PubliDate":1969,"IssueDate":null,"Volume":"1969","Issue":"8","Pagination":"9","Place":"Texel","Edition":null,"BRefXtra":null,"BRefXtraRR":null,"SerID":5697,"SerRR":"NIOZ-rapport. Netherlands Institute for Sea Research (NIOZ): Den Burg.  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