IAEA-N-1 , Ammonium Sulfate
Unit Size: 0.5g
IAEA-N-1 is a relatively coarse grained. salt of ammonium sulfate [(NH4)2 SO4] prepared by E. Salati, CENA (Centro de Energia Nuclear na Agricultura), Brazil, in the period of 1978 to 1983 [1, 2]. Its δ15N value is determined using data from several interlaboratory comparisons and assessments [2-5].
Analyte | Value | Unit | SD | R/I/C |
δ15N | +0.4 | ‰air N2 | 0.2 | C |
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IAEA-N-1Ammonium Sulfate0.4g15N=0.4‰air N2
IAEA-N-2Ammonium Sulfate0.4g15N=20.3‰air N2
IAEA-NO-3Potassium Nitrate0.5g15N=4.7‰air N2 18O=25.6‰VSMOW
USGS32Potassium Nitrate0.5g15N=180‰air N2 18O=25.7‰VSMOW
USGS34Potassium Nitrate0.5g15N=-1.8‰air N2 18O=-27.9‰VSMOW
USGS35Sodium Nitrate0.5g15N=2.7‰air N2 18O=57.5‰VSMOW
USGS25Ammonium Sulfate0.5g15N=-30.4‰air N2
USGS26Ammonium Sulfate0.5g15N=53.7‰air N2
VSMOWVienna Standard Mean Ocean Water20ml2H=0‰ 18O=0 ‰
SLAP2Water Standard Light Antarctic Precipitation 220ml2H=-427.5‰ 18O=-55.5‰
![N-1](https://img1.17img.cn/17img/images/201801/uepic/42617195-4e1e-4672-ba88-274dae2bfb05.jpg)
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