| Download | - View accepted manuscript: Detection of bromine by ICP-oa-ToF-MS following photochemical vapor generation (PDF, 934 KiB)
|
|---|
| DOI | Resolve DOI: https://doi.org/10.1021/ac504747a |
|---|
| Author | Search for: Sturgeon, Ralph E.1 |
|---|
| Affiliation | - National Research Council Canada. Measurement Science and Standards
|
|---|
| Format | Text, Article |
|---|
| Subject | Bituminous coal; Bromine; Groundwater; Isotopes; Detection limits; Inductively coupled plasma (ICP); Irradiation time; Photochemical reactor; Reference material; Replicate measurements; Transport efficiency; Volatile products; Inductively coupled plasma |
|---|
| Abstract | A unique flow-through photochemical reactor is utilized for the generation of volatile methyl bromide from aqueous solutions of bromide and bromate ions in a medium of 2% acetic acid containing 3000 μg/mL NH4Cl. The volatile product is transported to a thin-film gas-liquid phase separator and directed to an inductively coupled plasma (ICP) tine-of-flight mass spectrometer for detection and quantitation using either of the 79Br or 81Br isotopes. Utilizing a sample flow rate of 3.3 mL/min and a 13 s irradiation time, a detection limit of 0.14 ng/mL is achieved, yielding a 17-fold enhancement over conventional solution nebulization. The estimated generation efficiency of 95% provides for a significant increase in analyte transport efficiency to the ICP. Precision of replicate measurement is 2.5% (RSD) at 20 ng/mL. The methodology was validated by successful determination of bromine in reference materials, including IRMM (BCR-611) low level bromide in groundwater, NIST SRM 1568b Rice Flour, and SRM 1632 bituminous coal. |
|---|
| Publication date | 2015-02-04 |
|---|
| In | |
|---|
| Language | English |
|---|
| Peer reviewed | Yes |
|---|
| NPARC number | 21275830 |
|---|
| Export citation | Export as RIS |
|---|
| Report a correction | Report a correction (opens in a new tab) |
|---|
| Record identifier | bc1aefd0-1cac-4eb4-996c-f2c26e0c4aea |
|---|
| Record created | 2015-07-14 |
|---|
| Record modified | 2020-06-04 |
|---|
