SCHEDULED MAINTENANCE
Sephadex G-10 has been used to isolate sodium alizarin sulphonate from commercial samples of Alizarin Red S that contained variable and large amounts of inorganic salts. Aluminium in silicate minerals can be reliably determined with the purified reagent, which gives a linear response up to 180 µg of aluminium.
H. G. C. King and G. Pruden, Analyst, 1968, 93, 601 DOI: 10.1039/AN9689300601
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