Zhang, Li published the artcileActivated carbon functionalized with 1-amino-2-naphthol-4-sulfonate as a selective solid-phase sorbent for the extraction of gold(III), Recommanded Product: 4-Amino-3-hydroxynaphthalene-1-sulfonic acid, the publication is Microchimica Acta (2011), 174(3-4), 391-398, database is CAplus.
A new method for the separation, preconcentration, and determination of gold(III) ion in water samples was developed. It is based on the use of activated carbon that was modified with 1-amino-2-naphthol-4-sulfonate to yield a solid-phase sorbent. The exptl. conditions for adsorption were optimized. Gold(III) can be quant. adsorbed at pH 3, and adsorbed gold(III) can be completely eluted with 2.0 mL of a 2% solution of thiourea in 1 M HCl. The enrichment factor is 200, and the maximum adsorption capacity is 32 mg g-1. Au was then determined by inductively coupled plasma optical emission spectrometry. The detection limit (3σ) is 0.26 μg L-1, and the RSD is 3.1% (n = 8). Common potentially interfering ions do not interfere with the adsorption and determination of the analytes. The method displays selectivity, sensitivity and reproducibility, and was successfully applied to the determination of reference materials and water samples.
Microchimica Acta published new progress about 116-63-2. 116-63-2 belongs to naphthyridine, auxiliary class Sulfonic acid,Amine,Naphthalene,Alcohol,Organic Pigment, name is 4-Amino-3-hydroxynaphthalene-1-sulfonic acid, and the molecular formula is C13H16O2, Recommanded Product: 4-Amino-3-hydroxynaphthalene-1-sulfonic acid.
Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem