On-line Preconcentration Method for the Determination of Trace Metals in Water Samples Using a Fully Automated Pretreatment System Coupled with ICP-AES

Abstract

An automated on-line sample-preparation method using a computer-controlled pretreatment system (Auto-Pret AES system) coupled with ICP-AES was developed. In this work, an iminodiacetate chelating resin, packed in a mini-column and installed in the system was employed for the collection/concentration of 13 trace metals, including such toxic metals as Be, Cd, Cr, Cu and Pb. The limits of detection of the proposed method for trace metals were in the range of 0.001 (Be) -0.18 (Pb) ng mL -1 . The enrichment factors for metal ions were about 19 times, when 5 mL of samples were used. The sample throughput was 11 h -1 . The accuracy and the precision of the method were evaluated using river-water reference materials, SLRS-4 from NRCC, JSAC 0301-1 and JSAC 0302 from the Japan Society for Analytical Chemistry. The proposed method can be favorably applied to the collection/concentration of trace metals in natural water samples.

Speciation of arsenic in a thermoacidophilic iron-oxidizing archaeon, Acidianus brierleyi, and its culture medium by inductively coupled plasma–optical emission spectroscopy combined with flow injection pretreatment using an anion-exchange mini-column

“…For the preparation of the culture medium samples, 0.25 mL of culture medium was diluted to 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 7 [14][15][16]. Briefly, the system consisted of a syringe pump, an 8-port selection valve, and a 6-port switching valve, all of which were controlled by a personal computer using in-house software written by Visual Basic.…”

Highly Sensitive Determination of Cadmium and Lead in Leached Solutions from Ceramic Ware by Graphite Furnace Atomic Absorption Spectrometry Coupled with Sequential Injection-based Solid Phase Extraction Method

“…An Auto-Pret-AES system equipped with a Muromac A-1 packed minicolumn has also been applied to the determination of 13 trace metals in natural water samples. 25 In this study, an Auto-Pret-GFAAS system has been proposed.…”

Hyphenation in sample preparation: Advancement from the micro to the nano world

“…5. Katarina et al [76] described an on-line hyphenation of sample preparation method by using a computer controlled pre-treatment system (Auto-Pret AES) coupled with ICP-AES for the sample pretreatment and determination of trace metals in water samples. This system enabled determination of trace metals at the ppt level.…”