Page 342 - Analytical method for food addtives

E520–3, E541, E554–9, E573: Aluminium 229

Table 25.4 Summary of key steps of procedures used in IUPAC sample survey 1
Decomposition
Lab Test Type Aid Temp Measurement Detection
portion (ºC) limit
(g) (mg/kg)
1 1 Wet-open HNO 100 ETAAS 0.1
3
2 0.5 Dry-ashing No 450 ICP-AES 2.8
3 0.2 Wet-pressurised HNO 140 ETAAS 0.02
3
4 1 Wet-open HNO /HClO 200 FAAS 10
3 4
5 5 Wet-open HNO /H SO ? FAAS 5
3 2 4
6 0.5 Dry-ashing No 550 ICP-AES 0.08
7 0.15–0.20 Wet-open HNO 110 ZETAAS 1.7
3
8 0.2 Wet-open HNO /HClO / 150 ZETAAS 5
3 3
HClO
4
9 0.3 Wet-pressurised HNO 270 ETAAS 0.1
3
10 0.3 Wet-pressurised HNO 150 ICP-AES 1
3
11 1 Dry-ashing HNO 500 FAAS 0.1
3
12 0.20–0.25 Wet-pressurised HNO /HCl 150 ETAAS 0.5
3
13 1 Wet-open HNO /HF/ 105 ICP-AES 1.5
3
HClO
4
14 2.5 Dry-ashing H SO 500 FAAS 0.5
2 4
15 1 Dry-ashing Mg(NO ) 550 ETAAS 5
3 2
16 2.5 Wet-open HNO /HClO 200 ICP-AES 1
3 4
17 0.3 Wet-pressurised HNO 150 DCP-AES 0.3
3
18 0.15–0.60 Dry-ashing No 550 ZETAAS 0.1–0.5
19 2–4 Wet-open HNO /HClO 200 ETAAS 0.7
3 4
20 0.25 Wet-open HNO 110 ETAAS 0.02
3
21 0.2 Wet-pressurised HNO 150 ZETAAS 0.1
3
22 0.8 Wet-pressurised HNO ? ETAAS ?
3
23 1 Wet-pressurised HNO /HCl/HF 150 ICP-AES 0.25
3
24 0.25–0.50 Wet-open HNO 55 ETAAS 0.05
3
Measurement methods are abbreviated as:
ETAAS Electrochemical atomic absorption spectrometry
ZETAAS Zeeman backround corrected ETAAS
AES Atomic emission spectrometry
DCP Direct current plasma
ICP Inductively coupled plasma
FAAS Flame atomic absorption spectrometry