Elemental Analysis of Asphaltenes Using Simultaneous Laser-Induced Breakdown Spectroscopy (LIBS)-Laser Ablation Inductively Coupled Plasma Optical Emission Spectrometry (LA-ICP-OES)

被引：16

作者：

Oropeza, Dayana ^{[1
]}

Gonzalez, Jhanis ^{[1
,2
]}

Chirinos, Jose ^{[3
]}

Zorba, Vassilia ^{[1
]}

Rogel, Estrella ^{[4
]}

Ovalles, Cesar ^{[4
]}

Lopez-Linares, Francisco ^{[4
]}

机构：

[1] Lawrence Berkeley Natl Lab, Berkeley, CA USA

[2] Appl Spectra Inc, Fremont, CA USA

[3] Univ Cent Venezuela, Escuela Quim, Caracas, Venezuela

[4] Chevron Energy Technol Co, Richmond, CA USA

来源：

APPLIED SPECTROSCOPY | 2019年 / 73卷 / 05期

关键词：

Asphaltenes; laser ablation; elemental analysis; inductively coupled plasma; ICP; optical emission spectroscopy; OES; laser-induced breakdown spectroscopy; LIBS; CRUDE-OIL SAMPLES; MASS SPECTROMETRY; TRACE-ELEMENTS; PETROLEUM; METALS; MS; VANADIUM; NICKEL; FRACTIONS; PRODUCTS;

D O I：

10.1177/0003702818819497

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Laser-induced breakdown spectroscopy (LIBS) and laser ablation inductively coupled plasma optical emission spectrometry (LA-ICP-OES) were used simultaneously for the elemental analysis of asphaltene samples using minimum sample pretreatment in combination with low laser energy to reduce the amount of removed particles and avoid carbon deposits in the ablation cell. Quantitative analyses of S, Ni, and V were accomplished with LA-ICP-OES using external calibration with the C line as internal standard. The aromatic/paraffinic nature of the asphaltenes was also obtained throughout the H/C ratio using LIBS and partial least square regression model. The results showed very good agreement (+/- 10%) between the concentration obtained by LA-ICP-OES and microwave-assisted acid digestion values.

引用

页码：540 / 549

页数：10

共 56 条

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