1Comparison of methods for measuring nitratee Nitrate (ppm) in plant extract 4 S
ID: 982653 • Letter: 1
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1Comparison of methods for measuring nitratee Nitrate (ppm) in plant extract 4 Spectrophotometry with Cd reduction 1.22 1.21 4.18 3.96 1.18 3.65 4.36 1.61 Sample Difference (d) 0.01 0.37 -0.14 0.96 -0.22 -0.28 0.12 0.09 0.114 0.401 0.803 2.365 Experimental biosensor 1.23 1.58 4.04 4.92 0.96 3.37 4.48 1.70 Mean difference = 2 3 4 10 12 13 14 15 16 17 18 | D6 = C6-B6 19 ID14= AVERAGE(D6:D13 20 | D15= STDEV(D6:D13) 21 | D16 = ABS(D14)*SQRT(A13)/D15 22 | D17=TINV(0.05,A13-1) Standard deviation of differences culated = able (ABS= absolute value)Explanation / Answer
yes there is a significant difference between the methods
1)Cadmium in various forms—such as electrolytically precipitated, “mossy” or “spongy,” filings, granules, and filings or granules washed with solutions of mercury (II), silver (I), or copper (II) ions has long been the reducing agent of choice for colorimetric nitrate determinations.
2) An improved method based on a nitrate biosensor is developed and applied successfully for in-depth monitoring and study of anoxic activated sludge activities. The major advantages of the methodology are its simplicity, reliability and high data quality.
these are the main significant difference .
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