# Fertilisers (Sampling and Analysis) Regulations (Northern Ireland) 1996, Paragraph 3: PRINCIPLE


Molybdenum(v); forms a complex [MoO(SCN)5]– – in an acid medium with SCN– ions. The complex is extracted with n-butyl acetate. Interfering ions such as those of iron remain in the aqueous phase. The yellow-orange colour is determined by molecular absorption spectrometry at 470 nm.

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Source: https://www.legislation.gov.uk/nisr/1996/513/schedule/2/part/I/chapter/25j./paragraph/3 (the official version)
Page: https://openlegislation.uk/fertilisers-sampling-and-analysis-regulations-northern-ireland-1996/schedule-2/part-I/chapter-25j./paragraph-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.