Examination of Cigarette Ash Evidence by XRF Combined with Chemometrics

Classification	Sample number
1	4#、14#、26#、30#、34#、35#
2	1#、2#、3#、5#、6#、7#、8#、9#、10#、11#、12#、13#、15#、16#、18#、20#、21#、22#、23#、24#、25#、27#、28#、29#、31#、32#
3	33#、37#、39#、40#、41#
4	17#、19#、36#、38#、42#

Table 2. Contribution rate of cumulative explanatory variance

View table

Table 2. Contribution rate of cumulative explanatory variance

Component	Initial eigenvalue		Total variance of interpretation		Extract sum of squares load
Component	Total	Variance /%	Accumulation /%	Total	Accumulation /%	Total /%
1	7.279	61.996	61.996	7.279	61.996	61.996
2	1.707	22.194	84.190	1.707	22.194	84.190
3	1.307	9.336	93.526	1.307	9.336	93.526
4	0.844	3.028	96.555
5	0.761	2.433	98.988

Table 3. Results of one-way ANOVA

View table

Table 3. Results of one-way ANOVA

Element	Position	ANOVA
Element	Position	Sum of squares	df	Mean square	F	Significance
Pb	Between groups	1644.94	3.00	548.31	15.74	0.00
	Within group	1324.13	38.00	34.85
	Total	2969.07	41.00
Zr	Between groups	3161.29	3.00	1053.76	28.54	0.00
	Within group	1402.83	38.00	36.92
	Total	4564.12	41.00
Ba	Between groups	44210.94	3.00	14736.98	41.47	0.00
	Within group	13504.96	38.00	355.39
	Total	57715.91	41.00
Hg	Between groups	1582.79	3.00	527.60	32.33	0.00
	Within group	620.19	38.00	16.32
	Total	2202.98	41.00
Co	Between groups	337.33	3.00	112.44	2.00	0.13
	Within group	2133.17	38.00	56.14
	Total	2470.50	41.00
Cu	Between groups	11171.62	3.00	3723.87	13.33	0.00
	Within group	10614.29	38.00	279.32
	Total	21785.91	41.00
Zn	Between groups	269753.66	3.00	89917.89	6.54	0.00
	Within group	522482.82	38.00	13749.55
	Total	792236.48	41.00
Rb	Between groups	24233.79	3.00	8077.93	27.23	0.00
	Within group	11271.85	38.00	296.63
	Total	35505.64	41.00
Sr	Between groups	466776.87	3.00	155592.29	42.82	0.00
	Within group	138089.92	38.00	3633.95
	Total	604866.79	41.00
K	Between groups	8924000000.00	3.00	2975000000.00	4.62	0.01
	Within group	24470000000.00	38.00	643900000.00
	Total	33390000000.00	41.00
Ca	Between groups	40140000000.00	3.00	13380000000.00	15.39	0.00
	Within group	33040000000.00	38.00	869600000.00
	Total	73190000000.00	41.00
Element	Position	ANOVA
Element	Position	Sum of squares	df	Mean square	F	Significance
Ti	Between groups	295571.14	3.00	98523.71	3.65	0.02
	Within group	1025183.26	38.00	26978.51
	Total	1320754.41	41.00
Mn	Between groups	4000895.75	3.00	1333631.92	23.64	0.00
	Within group	2143526.37	38.00	56408.59
	Total	6144422.12	41.00
Fe	Between groups	5894951.33	3.00	1964983.78	7.73	0.00
	Withingroup	9662295.15	38.00	254270.93
	Total	15557246.48	41.00

Table 4. Test discriminant results of Wilks Lambda
View table
Table 4. Test discriminant results of Wilks Lambda
Function Wilks Lambda Chi square df Signification
1 to 3 0.008 154.020 42 0.000
2 to 3 0.130 65.264 26 0.000
3 0.494 22.572 12 0.032

Table 5. Eigenvalue of discriminant function
View table
Table 5. Eigenvalue of discriminant function
Function Characteristic value Percent of variance Cumulative /% Regular correlation
1 15.017 79.7 79.7 0.968
2 2.797 14.8 94.6 0.858

Table 6. Output table of sample regression
View table
Table 6. Output table of sample regression
Item Classification Forecast group member Total
1 2 3 4
Initial Count 1 6 0 0 0 6
2 0 26 0 0 26
3 0 0 5 0 5
4 0 0 0 5 5
Percentage /% 1 100.0 0.0 0.0 0.0 100.0
2 0.0 100.0 0.0 0.0 100.0
3 0.0 0.0 100.0 0.0 100.0
4 0.0 0.0 0.0 100.0 100.0

Tools

Get Citation

Copy Citation Text

Fu Junze, Jiang Hong, Li Yi, Man Ji, Guo Zhongzheng. Examination of Cigarette Ash Evidence by XRF Combined with Chemometrics[J]. Laser & Optoelectronics Progress, 2021, 58(6): 630003

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites