Research Article
Tracing the Origin of Groundwater Nitrate in an Area Affected by Acid Rain Using Dual Isotopic Composition of Nitrate
Table 3
Strontium and nitrate concentration and isotopic compositions for spring waters.
| | Sample | Sr2+ (mg/L) | 87Sr/86Sr | NO3- (mg/L) | δ15N-NO3- (‰) | δ18O-NO3- (‰) | δ18O-H2O (‰) | δ2H-H2O (‰) | (‰) |
| | XS-2 | 0.76 | 0.709168 | 2.8 | +3.2 | -2.5 | -8.1 | -47.3 | 17.6 | | XS-3 | 0.91 | | 2.4 | +2.5 | -0.3 | -8.2 | -47.3 | 18.3 | | XS-5 | 1.04 | | 1.7 | +2.7 | -0.6 | -8.2 | -47.7 | 17.8 | | XS-6 | 0.10 | | 2.9 | | | -7.6 | -44.3 | 16.5 | | XS-25 | 0.13 | 0.710342 | 0.2 | | | -7.9 | -45.5 | 17.6 | | XS-4 | 0.25 | | 4.6 | | | -7.7 | -44.4 | 17.4 | | XS-7 | 0.12 | 0.712219 | 8.4 | +6.6 | +4.2 | -7.1 | -43.8 | 12.6 | | XS-8 | 0.18 | 0.712023 | 1.8 | | | -7.0 | -40.6 | 15.2 | | XS-9 | 0.24 | | 6.1 | | | -6.8 | -38.9 | 15.9 | | XS-24 | 0.08 | 0.712827 | 10.5 | +6.2 | +0.2 | -7.2 | -39.4 | 17.9 | | XS-10 | 0.42 | 0.710713 | 5.5 | +4.7 | +1.3 | -7.6 | -45.0 | 16.1 | | XS-11 | 0.16 | 0.711593 | <0.05 | | | -6.4 | -37.4 | 14.1 | | XS-12 | 0.64 | 0.710368 | 3.2 | | | -7.1 | -42.1 | 15.0 | | XS-1 | 0.09 | 0.710581 | 0.2 | | | -6.8 | -39.5 | 15.2 | | XS-13 | 0.11 | | 11.8 | +7.5 | +2.3 | -6.8 | -40.0 | 14.5 | | XS-14 | 0.62 | | 4.5 | | | -6.5 | -36.8 | 15.0 | | XS-16 | 0.02 | 0.711683 | 2.9 | | | -7.6 | -43.9 | 16.8 | | XS-17 | 0.26 | 0.707968 | 63.9 | +2.2 | +1.1 | -6.8 | -41.4 | 13.2 | | XS-18 | 0.12 | 0.709651 | 3.4 | +5.7 | -4.7 | -6.9 | -40.5 | 14.4 | | XS-21 | 0.01 | 0.715097 | <0.05 | | | -6.9 | -40.0 | 14.8 | | XS-20 | 0.15 | 0.712698 | <0.05 | | | -7.3 | -42.2 | 16.1 | | XS-22 | 0.06 | 0.711773 | 3.3 | | | -6.1 | -36.2 | 12.2 | | XS-23 | 1.97 | 0.711113 | 7.5 | +0.1 | +0.2 | -7.2 | -43.9 | 13.9 |
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