Identifying the Geographical Origin of Tobacco Leaf by Strontium and Lead Isotopic with Mineral Elemental Fingerprint

Table 2

The Strontium and lead isotope ratio in the tobacco leaf from different countries.

Nation	Statistical indicator	^87Sr/^86Sr	^208Pb/^204Pb	^207Pb/^204Pb	^206Pb/^204Pb
Argentina (n = 12)	Ave.	0.71522^b	38.318^d	15.609^c	18.322^d
	S.D.	0.00038	0.184	0.012	0.121
	Min.	0.71465	38.024	15.596	18.148
	Max.	0.71585	38.641	15.635	18.537
Brazil (n = 10)	Ave.	0.71559^b	38.746^bc	15.639^bc	18.703^bcd
	S.D.	0.00115	0.124	0.013	0.110
	Min.	0.71445	38.552	15.623	18.550
	Max.	0.71802	38.963	15.665	18.817
Zimbabwe (n = 17)	Ave.	0.74148^a	41.122^a	16.450^a	22.388^a
	S.D.	0.00586	0.789	0.223	1.187
	Min.	0.73248	39.881	16.078	20.451
	Max.	0.75604	42.420	16.913	24.574
U.S. (n = 6)	Ave.	0.71334^b	38.578^cd	15.638^bc	18.737^bc
	S.D.	0.00231	0.127	0.021	0.140
	Min.	0.71051	38.421	15.615	18.560
	Max.	0.71691	38.742	15.671	18.871
Zambia (n = 8)	Ave.	0.73999^a	38.891^b	15.699^b	18.810^b
	S.D.	0.00464	0.239	0.021	0.175
	Min.	0.73405	38.706	15.659	18.553
	Max.	0.74644	39.450	15.734	19.158
China (n = 28)	Ave.	0.71573^b	38.563^cd	15.652^bc	18.455^cd
	S.D.	0.00495	0.128	0.018	0.082
	Min.	0.70965	38.372	15.620	18.309
	Max.	0.72567	38.846	15.701	18.610
Total (n = 81)	Ave.	0.72326	39.120	15.815	19.347
	S.D.	0.01266	1.115	0.345	1.674
	Min.	0.70965	38.024	15.596	18.148
	Max.	0.75604	42.420	16.913	24.574
Significant differencebetween regions	value	0.000	0.000	0.000	0.000
	F value	122.238	116.015	161.295	129.181

Different uppercase characters in each column indicate significantly different mean values according to Duncan test ().