Determination of Thallium and Its Compounds in Workplace Air by Ultrasonic Extraction-Inductively Coupled Plasma Mass Spectrometry Using No Gas Mode

Fei ZHANG; Xia HUA; Fan YOU; Bin WANG; Li MAO

doi:10.3964/j.issn.1000-0593(2021)07-2279-05

Journals >Spectroscopy and Spectral Analysis >Volume 41 >Issue 7 >Page 2279 > Article

Spectroscopy and Spectral Analysis
Vol. 41, Issue 7, 2279 (2021)

Determination of Thallium and Its Compounds in Workplace Air by Ultrasonic Extraction-Inductively Coupled Plasma Mass Spectrometry Using No Gas Mode

Fei ZHANG^1、1;, Xia HUA^2、*, Fan YOU^1、1;, Bin WANG^3、3;, and Li MAO^{3、3; *;}

Author Affiliations

¹1. Sichuan Center for Disease Control and Prevention, Chengdu 610041, China

²2. Sichuan Center for Food and Drug Evaluation, Inspection & Monitoring, Chengdu 610017, China

³3. School of Public Health, Chengdu Medical College, Chengdu 610500, China

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DOI: 10.3964/j.issn.1000-0593(2021)07-2279-05 Cite this Article

Fei ZHANG, Xia HUA, Fan YOU, Bin WANG, Li MAO. Determination of Thallium and Its Compounds in Workplace Air by Ultrasonic Extraction-Inductively Coupled Plasma Mass Spectrometry Using No Gas Mode[J]. Spectroscopy and Spectral Analysis, 2021, 41(7): 2279 Copy Citation Text

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Fig. 1. Effect of ultrasonic extraction conditions on the results

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Fig. 2. Standard curve equation for determination of thallium and its compounds in workplace air by ICP-MS

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参数	设定值
RF power	1 550 W
Cool gas flow	15.0 L·min^-1
Auxiliary gas flow	0.90 L·min^-1
Plasma gas	15 L·min^-1
Nebulizer pump	0.1 r·min^-1
Carrier gas	1.05 L·min^-1
Resolution	Standard
Sample lifting speed	0.30 r·s^-1
Sample uptake time	25 s
Dwell time	28 s
Replicate measurements	3
Acquisition mode	Mass spectrogram
Extract lens 2 voltage	-200 V
Omega bias voltage	-80 V
Omega lens voltage	6.4 V
Deflect	13.8 V
Tuning mode	No Gas
Atomizer type	MicroMist

Table 1. Operating parameters of No Gas-ICP-MS

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质控样品	测定值/μg								RSD/%	参考值/μg
质控样品	1	2	3	4	5	6	7	平均	RSD/%	参考值/μg
ZK147	5.68	5.67	5.63	5.64	5.71	5.60	5.72	5.66	0.77	5.9±0.4
ZK148	10.74	10.72	10.68	10.67	10.88	10.86	10.65	10.74	0.86	11.4±0.8

Table 2. Precision and accuracy of proposed method

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样品序号	加标值/μg	干扰元素		测得值/μg	回收率/%
样品序号	加标值/μg	种类	含量/μg	测得值/μg	回收率/%
1	0.30	As, Pb, Mn, Cd, Hg	1.00	0.32	106.7
1	10	As, Pb, Mn, Cd, Hg	30	9.72	97.2
3	60	As, Pb, Mn, Cd, Hg	180	59.1	98.5

Table 3. Effect of other elements on the determination of thallium

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样品编号	本法平均值		国标法平均值		相对误差/%
样品编号	ng·mL^-1	μg·m^-3	ng·mL^-1	μg·m^-3	相对误差/%
1	3.14	0.21	3.34	0.22	6.37
2	18.22	1.21	17.77	1.18	2.47
3	35.61	2.37	35.32	2.35	0.81
4	44.58	2.97	44.35	2.96	0.52
5	12.32	0.82	12.68	0.85	2.92
6	22.49	1.50	22.98	1.53	2.18
7	38.17	2.54	38.42	2.56	0.65
8	9.12	0.61	9.34	0.63	2.41
9	0.94	0.06	0.97	0.06	3.19
10	33.74	2.25	34.22	2.28	1.42

Table 4. Analytical results of samples (n=7)

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