Addition/Correction pubs.acs.org/ac
Correction to Sensitive and Comprehensive Detection of Chemical Warfare Agents in Air by Atmospheric Pressure Chemical Ionization Ion Trap Tandem Mass Spectrometry with Counterflow Introduction Yasuo Seto,* Hiroshi Sekiguchi, Hisashi Maruko, Shigeharu Yamashiro, Yasuhiro Sano, Yasuo Takayama, Ryoji Sekioka, Shintaro Yamaguchi, Shintaro Kishi, Takafumi Satoh, Hiroyuki Sekiguchi, Kazumitsu Iura, Hisayuki Nagashima, Tomoki Nagoya, Kouichiro Tsuge, Isaac Ohsawa, Akihiko Okumura,* Yasuaki Takada, Naoya Ezawa, Susumu Watanabe, and Hiroaki Hashimoto Anal. Chem. 2014, 86, 4316−4326. DOI: 10.1021/ac500042r The authors regret to inform the readers that there are mistaken unit descriptions in Table 1. The corrected Table 1 is attached. The concentration unit (μg/m3) for the calibration plot had been mistakenly described as “mg/m3”. In addition, zero concentration (concentration of blank measurement) is added to the range of each calibration plot, and accordingly, the calibration point is incremented by one. The authors would like to apologize for any inconvenience and misunderstanding caused by these errors.
Published: March 23, 2015 © 2015 American Chemical Society
4053
DOI: 10.1021/acs.analchem.5b00231 Anal. Chem. 2015, 87, 4053−4054
4054
+
+
+
+
+ + + + − + + + + +
+ + + + − − − −
−
GB
GD
GF
GA
VX RVX DF HD L1 HN1 HN2 HN3 DA DC
DM CN CS OC AC CK CL CG
PS
polarity
assignment MH+ [M − C3H5]+ MH+ [M − C6H11]+ MH+ [M − C6H9]+ MH+ MH+ MH+ MH+ MH+ [M + O + H]+ [M − 2Cl + 3O + H]− MH+ MH+ MH+ MH+ MH+ MH+ [M − Cl]+ MH+ MH+ MH+ [M − H]− [M + O − Cl]− M− Cl2− Cl− [M − Cl]−
transition (m/z)
141 → 99 → 97 99 → 97 → 79 183 → 99 → 97 99 → 97 → 79 181 → 99 → 97 99 → 97 → 79 163 → 135 163 → 135 → 126 268 → 128 → 86 268 → 100 → 72 101 → 99 → 97 175 → 77 185 → 123 170 → 142 → 106 156 → 120 → 92 204 → 106 → 70 265 → 229 → 227 256 → 229 256 → 229 → 227 242 → 167 → 139 155 → 77 → 49 189 → 162 → 127 306 → 137 → 122 26 42 70 → 35 70 → 35 35 128 → 46 0, 170−1700
0, 5.7−29 0, 0.14−2.9 0, 0.14−2.9 0, 0.14−2.9 0, 4.3−71 0, 3.3−670 0, 2.2−220 0, 3.1−310
0, 0.057−2.9 0, 0.57−2.9 0, 0.14−2.9 0, 1.5−30 0, 1.0−9.5 0, 0.13−2.6 0, 0.16−3.3 0, 0.18−3.5 0, 0.3−2.7 0, 0.2−1.25
0, 0.065−3.2 0, 0.065−3.2 0, 0.50−10
0, 0.16−3.1 0, 3.1 0, 0.15−7.3
range (μg/m3)
3
4 6 6 6 6 7 6 8
8 5 6 6 6 6 6 6 6 5
6 2 8 8 8 8 6
point
calibration plot
0.9924 0.9986 0.9931 0.9958 0.9231 0.9903 0.9916 0.996 0.9976 0.9994
0.988 1.000 0.9596 0.999 0.9997 0.9977 0.9968 0.9983 0.9639 0.9852 0.9942 0.9994 0.9840 0.999 0.9996 0.9981 0.9288 0.9952
R2
6.1 0.11 0.43 0.15 2.3 6.6 2.3 23 14 540
0.58 0.0076 4.3 0.29 0.22 0.041 0.028 0.0024 1.7 1.3 1.5 0.63 0.66 0.053 0.11 0.31 0.12 0.030
LODa (μg/m3)
100
1,500
2 900/1 500 (−)/400 (−)/700
100 000
43
0.4
0.0009
0.02
0.01
0.004
0.02
TWAc (ppb)
5 000/11 000
(−)/300
3/0.4 (−)/3 (−)/3
0.01/0.001
0.1/0.03
0.05/0.03
(−)/0.03
0.1/0.03
STEL/TWAb (μg/m3)
b
2 200g
4 500 11 000 21 000g
10 000 7 000 61 000
1 500 1 200−1 500 1 500 3 000 1 500 15 000 10 000
30 40f
300
70−100e
70−100
70−100
LC50d (mg/m3)
ND ND ND ND ND ND ND ND ND ND ND
ND ND ND ND ND ND 0.0029 ND ND ND ND ND ND ND ND ND ND
false positive rate by gasoline vaporh
a
Defined as the concentration giving the ion signal of 3 × σBG, where σBG is the standard deviation of the background signal measured for the laboratory air. Short-term exposure limit/time-weighted average (in reference 46). cTime-weighted average (in reference 44). d50% lethal concentration for 1 min exposure for humans (in reference 1 except for GF*5, RVX*6, CL*7, and PS*7). eAssumed to be same as that for GD. fReference 43. gReference 43. hFalse-positive rate by gasoline vapor [(μg/m3 of CWA)/(mg/m3 of gasoline)]; ND: not detected.
choking agent
blood agent
lachrymator
vomit agent
blister agent
precursor
nerve gas
agent
ion monitored
Table 1. Detection Performance of CFI-APCI-ITMS in Real-Time (1 s) for Gaseous, Volatile, And Nonvolatile Chemical Warfare Agents and a Precursor in Air
Analytical Chemistry Addition/Correction
DOI: 10.1021/acs.analchem.5b00231 Anal. Chem. 2015, 87, 4053−4054
