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International Journal of Analytical Chemistry
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International Journal of Analytical Chemistry
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2024
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Article
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Tab 8
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Research Article
Analysis of Quality Differences in Radix Dipsaci before and after Processing with Salt Based on Quantitative Control of HPLC Multi-Indicator Components Combined with Chemometrics
Table 8
Principal component eigenvalue and contribution rate.
Principal component
λ
Contribution rate (%)
Cumulative contribution rate (%)
1
4.324
43.237
43.237
2
1.512
15.122
58.359
3
1.395
13.950
72.310
4
0.946
9.456
81.766
5
0.718
7.177
88.943
6
0.529
5.291
94.234
7
0.257
2.566
96.800
8
0.166
1.661
98.461
9
0.122
1.219
99.681
10
0.032
0.319
100.000