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Table 4 Summary STRIP distillation results for Na 2 SO 4

From: Modern applications for a total sulfur reduction distillation method - what’s old is new again

Identifier Amount (mg) Area (V∙s) δ34SVCDT mmol S Area/mmol
Na2SO4 (solid) 0.366 54.9 -2.4 0.0026 21313
Na2SO4 (solid) 0.368 57.1 -2.9 0.0026 22037
Na2SO4 (solid) 0.386 61.7 -2.8 0.0027 22709
Na2SO4 (solid) 0.387 77.5 -3.0 0.0027 28454
Na2SO4 (solid) 0.364 87.2 -2.1 0.0026 34028
Na2SO4 (solid) 0.481 74.8 -3.2 0.0034 22088
Na2SO4 (solid) 0.352 83.5 -2.6 0.0025 33691
Na2SO4 (solid) 0.364 71.5 -3.3 0.0026 27903
Na2SO4 (solid) 0.489 96.4 -3.1 0.0034 28001
   Average -2.8 +/-0.4   26692
C-14 (Na2SO4, solid, distilled) 0.524 31.7 -2.3   
C-15 (Na2SO4, solid, distilled) 0.481 30.7 -2.6   
   Average -2.5 +/-0.2   
BaSO4 (from control solution) 0.381 55.7 -2.4 0.0016 34152
BaSO4 (from control solution) 0.381 55.6 -2.3 0.0016 34050
BaSO4 (from control solution) 0.474 66.5 -2.6 0.0020 32764
BaSO4 (from control solution) 0.384 54.2 -2.4 0.0016 32969
   Average -2.4 +/-0.1   33484
  Amount (mg) Area (V∙s) δ 34 S VCDT mmol S IRMS Fraction sample weighed in Distillation yield
1 ml 25 mM sulfate       
C18 0.431 25.0 -2.3 0.0007 - -
C19 0.590 36.8 -2.9 0.0011 - -
C22 0.429 40.1 -3.4 0.0012 - -
C23 0.592 57.6 -2.0 0.0017 - -
C34 0.472 33.7 -2.3 0.0010 0.04 96%
C35 0.606 47.3 -2.2 0.0014 0.06 103%
   Average -2.5 +/-0.5    
0.2 ml 25 mM sulfate
C20 1.943 27.6 -2.6 0.0008 - -
C21 1.533 27.4 -2.4 0.0008 - -
C24 1.520 35.6 -2.0 0.0011 - -
C25 1.630 37.4 -2.3 0.0011 - -
C32a 1.560 23.5 -1.7 0.0007 - -
C32b 1.595 22.7 -1.8 0.0007 - -
C33a 1.588 26.1 -2.1 0.0008 - -
C33b 1.582 19.0 -2.3 0.0006 - -
C36 2.502 43.3 -2.1 0.0013 0.26 100%
C37 2.562 48.4 -2.2 0.0014 0.29 98%
C40 2.388 44.3 -2.4 0.0013 0.35 77%
C41 2.479 49.3 -2.5 0.0015 0.30 100%
C42 2.734 59.0 -2.4 0.0018 0.29 121%
   Average -2.2 +/-0.3    
C-38 (0.02 ml) 4.165 7.9 -2.0 0.0002 0.45 105%
C-39 (0.02 ml) 3.899 6.9 -0.9 0.0002 0.51 81%
  1. -weights were not recorded/yields could not be calculated.