Origins of Nephrite by Laser-Induced Breakdown Spectroscopy Using Partial Least Squares Discriminant Analysis

Yajun, 王亚军 Wang; Xinqiang, 袁心强 Yuan; Bin, 石斌 Shi; Qian, 张倩 Zhang; Tao, 陈涛 Chen

doi:10.3788/cjl201643.1211001

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[19][20][21] Furthermore, the application of various multivariate models such as linear discriminant analysis (LDA), partial least squares (PLS), and their respective improved methods, as well as support vector machine (SVM), has become commonplace in the eld of gemology. [22][23][24][25][26] However, previous studies on nephrite jade discrimination have oen been constrained by less than 200 samples; such a number is too small for modeling. As the dataset employed for modeling typically does not exceed 500 entries, integrated methods are seldom employed.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Comparative analysis of LDA, PLS-DA, SVM, RF, and voting ensemble for discrimination origin in greenish-white to white nephrites using LIBS

Shih,

Yuan,

Shi

2024

J. Anal. At. Spectrom.

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

“…Furthermore, the application of various multivariate models such as linear discriminant analysis (LDA), partial least squares (PLS), and their respective improved methods, as well as support vector machine (SVM), has become commonplace in the field of gemology. 22–26…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of LDA, PLS-DA, SVM, RF, and voting ensemble for discrimination origin in greenish-white to white nephrites using LIBS

Shih,

Yuan,

Shi

2024

J. Anal. At. Spectrom.

View full text Add to dashboard Cite

show abstract

Combining Rare Earth Element Analysis and Chemometric Method to Determine the Geographical Origin of Nephrite

Yang

2022

Minerals

View full text Add to dashboard Cite

Nephrite is a high-valued gem material, whose geographical origin determination is a topic of interest to both consumers and producers since the geographic origin determines its price and reputation. In the present study, we suggest a two-step method for discriminating geographical origins of nephrite based on the rare earth element (REE) contents combined with chemometrics. In the first step, the REE contents of nephrite samples were determined by laser ablation-inductively coupled plasma mass spectrometry (LA-ICP-MS), combined with previously reported data—the chondrite-normalized REE distribution pattern; the REE parameters of nephrite samples from six origins, namely Xinjiang, Qinghai, Russia, Guangxi, Guizhou, and Liaoning were then compared. In the second step, origin discriminant models were established by linear discriminant analysis (LDA), and the accuracy of the model was evaluated by leave-one-out cross-validation (LOOCV). The results showed that the REE contents were significantly different among the six nephrite origins with regional characteristics, which makes it possible to trace the origin. Using chondrite-normalized REE distribution patterns, the six nephrite origins can be divided into three separate groups: Xinjiang−Qinghai−Russia, Luodian−Dahua, and Xiuyan. Xiuyan nephrite can be directly distinguished from the other origins due to its unique REE distribution pattern. In the second step, the LDA discrimination models were performed on the remaining two groups. For the Luodian−Dahua group, the accuracy of the original classification and LOOCV were 97.9% and 85.4%, which indicated REE combined with LDA could effectively identify Luodian nephrite and Dahua nephrite. For the Xinjiang−Qinghai−Russia group, the accuracy of the original classification and LOOCV was 74.1% and 63.9%, respectively. Overall, this work proves that a combination of REE analysis and chemometrics has a certain feasibility and broad application prospects for geographical origin, and the same methodology can be applied to study the origin of other gem materials.

show abstract

Origins of Nephrite by Laser-Induced Breakdown Spectroscopy Using Partial Least Squares Discriminant Analysis

Cited by 2 publications

References 0 publications

Comparative analysis of LDA, PLS-DA, SVM, RF, and voting ensemble for discrimination origin in greenish-white to white nephrites using LIBS

Comparative analysis of LDA, PLS-DA, SVM, RF, and voting ensemble for discrimination origin in greenish-white to white nephrites using LIBS

Combining Rare Earth Element Analysis and Chemometric Method to Determine the Geographical Origin of Nephrite

Contact Info

Product

Resources

About