Assay for lithium using tetra-substituted aryl cyclic formazan d

Details Assay for lithium using tetra-substituted aryl cyclic formazan d Assay for lithium using tetra-substituted aryl cyclic formazan d

1989-08-14

1991-09-24

Lee, Mary C.

Chemistry: analytical and immunological testing

Metal or metal containing

Li, na, k, rb, cs, fr, be, mg, ca, sr, ba, ra

436 74, 436 92, 436169, 422 56, 540469, G01N 2178, G01N 3320

Patent

active

050513672

ABSTRACT:
Tetra-substituted aryl cyclic formazan dyes are useful in assaying for lithium. The dyes have the structure: ##STR1## in which X represents CN or NO.sub.2 ;

REFERENCES:
patent: 4742010 (1988-05-01), Lin et al.
Zhurnal Analiticheskoi, vol. 37, No. 4, pp. 611-613, Apr. 1982, "Spectrophotometric Determination of Lithium with TMC-Crownformazane", Sitnikova et al.
Zhurnal Obshchei Khimii, vol. 51, No. 10, pp. 2324-2331, Oct. 1981, "Multidentate Formazans, IV. Oxygen-Containing Macrocyclic Chelants . . . -Nona-Decine Systems", Dziomko et al., I.
Khimiya Geterotsiklicheskikh Soedinenii, No. 8, pp. 1039-1040, Aug. 1979, "Macrocyclic Formazans-Derivatives of [1,11,4,5,7,8]-Dioxa-Tetraazacyclotetradecyne", Dziomko et al., II.

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