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TABLE 6-1 (Continued) <br /> Sample <br /> detection Percent <br /> Sample matrix Preparation method Analytical method limit recovery Reference <br /> Teeth Clean and section tooth; ASV NR 83-114 Rabinowitz et <br /> digest with HNO3; evaporate; al. 1989 <br /> redissolve in buffer solution <br /> Teeth Sample dry ashed; crushed; AAS NR 90-110 Steenhout and <br /> dry ashed again; dissolved Pourtois 1981 <br /> in HNO3 <br /> rn <br /> Hair Sample cleaned with acetone/ GFAAS 0.16 µg/g 99 Wilhelm et al. r <br /> methanol;digested with acid 1989 <br /> mixture and heat; diammonium <br /> phosphate added as matrix N <br /> modifier r o <br /> Bone 109Cd gamma-ray source at K-XRF 2 µg/g NR Hu et al. 1989, i <br /> 2.5 cm from skin of proximal 1990, 1991 0 <br /> tibia N <br /> Hair Sample cleaned with hexane, ICP-AES NR NR Thatcher et al. <br /> ethanol,and water; wet 1982 <br /> ashed with HNO3 and H2O2 <br /> AAS = atomic absorption spectrometry; APDC = ammonium pyrrolidine dithiocarbamate;ASV = anode stripping <br /> voltammetry; Ba(NO3)2 = barium nitrate; 109CD = cadmium 109 radioisotope;DPASV = differential pulse anodic <br /> stripping voltammetry; GFAAS = graphite furnace atomic absorption spectrometry; H2O2 = hydrogen peroxide; HCI = <br /> hydrogen chloride; H2SO4 = sulfuric acid; HC104 = perchloric acid; HNO3 = nitric acid; HPLC/FL = high performance <br /> liquid chromatography/fluorimetry; ICP-AES = inductively coupled plasma-atomic emission spectroscopy; ICP-MS = <br /> inductively coupled plasma-mass spectrometry; IDMS = isotope dilution mass spectrometry; K-XRF = K-wave x-ray <br /> fluorescence; L-XRF = L-wave x-ray fluorescence; MIBK = methyl isobutyl ketone; NAA = neutron activation analysis; <br /> NaOH = sodium hydroxide; NIOSH = National Institute for Occupational Safety and Health; NR = not reported; <br /> P&CAM = physical and chemical analytical methods;206Pb = lead 206 <br /> _ _ :4 <br /> >,�.• ..: .. _ _ ': co =' a " o a O g a yt. a C . ['" p C O ^. d fps <br /> ... N G7 (D fo ,•D (D O cD a G -•i CD y. O by N .., `L7 't7 C �O n a r11 C f1 O F: �. <br /> °' �T� d y v� F rn w c ^] �' i� a fD `d �.LQ n G) cru o x _ �. ,_ S = a ao .n ro <br /> G t" .O, a C �_ •b Dto <br /> CD Ic <br /> '�J� �: � .�* J O O ^ .n :� 7 (IO `•� C O O !=-ri y .'"'. �? rhe a� "� CD iv CJ' <br /> fj <br /> ri, ,., .r CD .• rn N .-. hn 'h I'." <br />