TY - JOUR
T1 - Simultaneous determination of silicic acid, Ca, Mg and Al in mineral water and composite tablets by ion chromatography
AU - Xu, Q.
AU - Xu, C.
AU - Zhang, W.
AU - Wang, Y. P.
AU - Jin, L. T.
AU - Haraguchi, H.
AU - Itoh, A.
AU - Tanaka, K.
PY - 2001
Y1 - 2001
N2 - A simple, selective and sensitive ion-chromatography method was investigated for simultaneously determining silicic acid, Ca2+, Mg2+, Al3+ and anions (Cl- and NO3-)in real samples. It involved a single-column ion-chromatograph with sodium hydroxide-methanol-water eluent and conductometric detection. Cations were converted to complex anions by adding EDTA to the sample solution. A set of well-defined peaks of silicic acid, Ca2+, Mg2+, Al3+, Cl- and NO3- were obtained. Detection limits using 3.3σ (σ = standard deviation of blank solution) were 1.25 × 10-6 M for H3SiO4-, 1.32 × 10-6 M for Ca2+, 1.28 × 10-6 M for Mg2+, 1.33 × 10- 6 M for Al3+, 1.31 × 10-6 M for Cl- and 1.24 × 10-6 M for NO3-. The method was successfully applied to analysis of mineral water and composite tablets.
AB - A simple, selective and sensitive ion-chromatography method was investigated for simultaneously determining silicic acid, Ca2+, Mg2+, Al3+ and anions (Cl- and NO3-)in real samples. It involved a single-column ion-chromatograph with sodium hydroxide-methanol-water eluent and conductometric detection. Cations were converted to complex anions by adding EDTA to the sample solution. A set of well-defined peaks of silicic acid, Ca2+, Mg2+, Al3+, Cl- and NO3- were obtained. Detection limits using 3.3σ (σ = standard deviation of blank solution) were 1.25 × 10-6 M for H3SiO4-, 1.32 × 10-6 M for Ca2+, 1.28 × 10-6 M for Mg2+, 1.33 × 10- 6 M for Al3+, 1.31 × 10-6 M for Cl- and 1.24 × 10-6 M for NO3-. The method was successfully applied to analysis of mineral water and composite tablets.
KW - Conductometric detection
KW - Ion chromatography
KW - Silicic acid, calcium, magnesium and aluminum
KW - Simultaneous determination
UR - https://www.scopus.com/pages/publications/0035091681
U2 - 10.1007/BF02492432
DO - 10.1007/BF02492432
M3 - 文章
AN - SCOPUS:0035091681
SN - 0009-5893
VL - 53
SP - 81
EP - 84
JO - Chromatographia
JF - Chromatographia
IS - 1-2
ER -