HP Data Explorer 4 B.3 Isotopes of Common Elements

Appendix B Overview of Isotopes

B.3 Isotopes of Common Elements

Table B-1lists the natural abundance of isotopes for some common elements seen in mass spectrometry

		Table B-1 Isotopes of Common Elements1
B			Natural			Natural
	Isotope	Mass	abundance	Isotope	Mass	abundance
			(%)			(%)
	1H	1.0078	99.985	31P	30.9737	100
	2H	2.0141	0.015	32S	31.9720	95.02
	12C	12	98.90	33S	32.9714	0.75
	13C	13.0033	1.10	34S	33.9678	4.21
	14N	14.0030	99.63	36S	35.9670	0.02
	15N	15.0001	0.37	35Cl	34.9688	75.77
	16O	15.9949	99.76	37Cl	36.9659	24.23
	17O	16.9991	0.04	39K	38.9637	93.2581
	18O	17.9991	0.200	40K	39.9639	0.012
	19F	18.9984	100	41K	40.9618	6.7302
	23Na	22.9897	100	79Br	78.9183	50.69
	28Si	27.9769	92.23	81Br	80.9162	49.31
	29Si	28.9764	4.67	127I	126.9044	100
	30Si	29.9737	3.10	____	____	____

1. Meth. Enzymol., McCloskey, J.A, ed., 1990, 193.

B-8 Applied Biosystems