Detection limit. Low concentrations of Ni2+ -EDTA near the detection limit gave the following counts in a

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Detection limit. Low concentrations of Ni2+ -EDTA near the detection limit gave the following counts in a mass spectral measurement: 175, 104, 164, 193, 131, 189, 155, 133, 151, 176. Ten measurements of a blank had a mean of 45 counts. A sample containing 1.00 μM Ni2+ -EDTA gave 1 797 counts. Estimate the detection limit for Ni-EDTA.
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