Copper alloy production in the Warring States period (475-221 BCE) of the Shu state: a metallurgical study on copper alloy objects of the Baishoulu cemetery in Chengdu, China

Heritage Science

Table 3 Lead isotopic ratios measured on the bronze objects from Baishoulu cemetery

Object's number	Type	²⁰⁸Pb/²⁰⁴Pb	²⁰⁷Pb /²⁰⁴Pb	²⁰⁶Pb/²⁰⁴Pb	²⁰⁷Pb/²⁰⁶Pb	²⁰⁸Pb/²⁰⁶Pb
BS1	Knife	38.462	15.602	17.934	0.8699	2.1446
BS2	Vessel fragment	38.593	15.605	18.255	0.8548	2.1141
BS3	Chariot bell	38.461	15.583	17.881	0.8715	2.1510
BS4	Sword	38.701	15.658	18.247	0.8581	2.1209
BS5	Knife	38.860	15.696	18.552	0.8460	2.0947
BS6	Spear	38.130	15.490	17.428	0.8888	2.1879
BS7	Vessel	38.008	15.470	17.356	0.8913	2.1901
BS8	Axe	38.178	15.466	17.659	0.8758	2.1619
BS9	Sword	38.099	15.575	17.716	0.8792	2.1505
BS10	Sword	38.347	15.556	17.863	0.8708	2.1468
BS11	Knife	38.440	15.576	17.871	0.8716	2.1509
BS12	Vessel fragment	39.123	15.548	18.137	0.8573	2.1569
BS13	Vessel fragment	38.385	15.580	17.897	0.8706	2.1448
BS14	Saw	38.497	15.603	17.965	0.8686	2.1430
BS15	Spear	38.612	15.621	18.171	0.8598	2.1253
BS16	Vessel fragment	38.623	15.629	18.106	0.8632	2.1331
BS17	Knife	38.552	15.568	17.904	0.8695	2.1533
BS18	Sword	38.725	15.657	18.214	0.8597	2.1262
BS19	Spear	38.608	15.637	18.250	0.8568	2.1155
BS20	Knife	38.711	15.651	18.286	0.8559	2.1170
BS21	Vessel's grid	38.762	15.660	18.359	0.8530	2.1114
BS22	Vessel	38.796	15.671	18.364	0.8534	2.1127
BS23	Knife	38.569	15.628	18.180	0.8596	2.1214
BS24	Knife	38.605	15.605	18.183	0.8582	2.1241
BS25	Bangle	38.734	15.630	18.499	0.8449	2.0939
BS26	Bangle	38.915	15.698	18.573	0.8452	2.0953
BS27	Dagger-axe	38.174	15.504	17.518	0.8850	2.1792
BS28	Dagger-axe	38.581	15.622	18.068	0.8646	2.1354