TY - JOUR
T1 - Successive determinations of platinum(II) and selenium(IV) with 1,4-dibromo-2,3-diaminonaphthalene in aqueous micellar solutions
AU - Warashina, Tomoyuki
AU - Hoshino, Hitoshi
AU - Yotsuyanagi, Takao
N1 - Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2001
Y1 - 2001
N2 - Highly sensitive successive determinations for Pt II and Se IV ions have been developed based upon reactions with 1,4-dibromo-2,3-diaminonaphthalene (Br 2 DAN), which forms a near-infrared (NIR) absorbing complex (ε = 1.2 × 10 5 1 mol -1 cm -1 at 800 nm) and an emissive complex (ex. 386 nm, em. 604 nm) for Pt II and Se IV ions, respectively, in acidic aqueous micellar solutions. In the presence of a cationic surfactant, cetyltrimethylammonium chloride, the detection limits for Pt II and Se IV ions are 1.2 ng ml -1 (3σ) and 0.98 ng ml -1 (S/N = 3), respectively. Hydrobromic acid plays a key role to enhance the color development of the NIR-absorbing Pt II complex. The influences of Cu II and Zn II ions at the normal human serum levels are readily tolerated, and interference from Fe I3II ion at 35 μmol 1 -1 is circumvented by the addition of 50 μmol 1 -1 of polyaminocarboxylates, such as EDTA.
AB - Highly sensitive successive determinations for Pt II and Se IV ions have been developed based upon reactions with 1,4-dibromo-2,3-diaminonaphthalene (Br 2 DAN), which forms a near-infrared (NIR) absorbing complex (ε = 1.2 × 10 5 1 mol -1 cm -1 at 800 nm) and an emissive complex (ex. 386 nm, em. 604 nm) for Pt II and Se IV ions, respectively, in acidic aqueous micellar solutions. In the presence of a cationic surfactant, cetyltrimethylammonium chloride, the detection limits for Pt II and Se IV ions are 1.2 ng ml -1 (3σ) and 0.98 ng ml -1 (S/N = 3), respectively. Hydrobromic acid plays a key role to enhance the color development of the NIR-absorbing Pt II complex. The influences of Cu II and Zn II ions at the normal human serum levels are readily tolerated, and interference from Fe I3II ion at 35 μmol 1 -1 is circumvented by the addition of 50 μmol 1 -1 of polyaminocarboxylates, such as EDTA.
UR - http://www.scopus.com/inward/record.url?scp=0034900231&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0034900231&partnerID=8YFLogxK
U2 - 10.2116/analsci.17.859
DO - 10.2116/analsci.17.859
M3 - Article
C2 - 11708119
AN - SCOPUS:0034900231
VL - 17
SP - 859
EP - 863
JO - Analytical Sciences
JF - Analytical Sciences
SN - 0910-6340
IS - 7
ER -