We are using ICP OES for analyse metals. According to APHA 3120 B we can analyse most of the metals except Sn (Tin). Tin can analyse with APHA 3113B method. Why Tin can't analyse with 3120B method? (tin (Sn) is not in the capable element list). Please explain the reason.
Hi!
I do not have access to the texts of these recommendations, but if the preparation of water or sewage samples consists of adding nitric acid and heating them, then tin, possibly in higher concentrations (mg / L), may mostly precipitate in the form of tin acids. If you use a mixture of nitric and hydrochloric acids it will remain dissolved, but this is not entirely certain. Hence, it is often proposed to add e.g. tartaric acid, fluoroboric acid, etc. You should refer to the newer methodological recommendations. And which ones will be best for you depends on the chemical composition of your samples, the purpose of the analysis and the properties of your measuring equipment. Only a general answer can be given to a general question. It is best to compare the results of the Sn determinations in selected samples and the corresponding reference material prepared in different ways.
Dear colleague,
Sn (tin) can determine by ICP-AES. Please, see the publications [1, 2].
References:
[1]. N. Velitchkova, E. N. Pentcheva, N. Daskalova, Determination of arsenic, mercury, selenium, thallium, tin and bismuth in environmental materials by inductively coupled plasma emission spectrometry, Spectrochim Acta Part B 59 (2004) 871- 882.
[2]. Nikolaya Velitchkova, Olga Veleva, Serafim Velichkov, and Nonka Daskalova, Possibilities of High Resolution Inductively Coupled Plasma Optical Emission Spectrometry in the Determination of Trace Elements in Environmental Materials, Hindawi Publishing Corporation, Journal of Spectroscopy Volume 2013, Article ID 505871, 12 pages http://dx.doi.org/10.1155/2013/505871
With kind regards, N.Daskalova
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