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245	1	0	_aAcid dissolution methods for heavy metals determination in pine needles
490	0		_vEnviron. Chem. Lett., 1(3), p.191-195, 2003
520	3		_aMicrowave digestion procedures using HNO3, HNO3+H2O2, HNO3+HClO4, HF mixtures and dry ashing with HF were investigated for heavy metals analysis by either inductively coupled plasma-optical emission spectroscopy (ICP-OES)or ICP-mass spectrometry (ICP-MS)in pine needles. The HF digestion procedures gave about 1.5 times higher values than a mixture of HNO3+H2O2 alone. For Ti determination in needles, the HF procedure using dry ashing is thus recommended. The mean concentrations amounted to 900 mg/kg for Fe and 21.8 mg/kg for Ti in needles collected at an area polluted by a stainless steel works. Those concentrations were 10.6 and 4.3 times higher than in needles collected at an area nearby a pulp mill complex (84.5 mg/kg Fe and 5.0 mg/kg Ti).
650	1	4	_aPINE NEEDLES
650	1	4	_aDISSOLUTION
650	1	4	_aPULP AND PAPER MILLS
650	1	4	_aFERROCHROME AND STAINLESS STEEL WORKS
700	1	2	_aPoykio, R.
700	1	2	_aPeramaki, P.
856	4	0	_uhttps://drive.google.com/file/d/1qNLdOFJZ56PZTo75kNT0ZD8o5R9VSxYM/view?usp=drivesdk _zPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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