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TRANSCRIPT
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Johnson Mathew*
US EPA Region 6
Houston Laboratory
10625 Fallstone Road
Houston, TX 77099
Jay Gandhi
Metrohm-Peak, Inc.
12521 Gulf Freeway
Houston, TX 77034
Joe Hedrick
Agilent Technologies, Inc.
2850 Centerville Rd.
Wilmington, DE 19808
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Agilent 1100 MSD�� ! �� !" �� !"#
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Dwell �� m/z 99 1 s
Dwell �� m/z 101 1 s
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��MSD-com�� 820 IC�� !"events�� !MSD� IC�
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m/z 99
m/z 101
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MSD1 99, EIC=98.7:99.7 (ICDATA~1\ICBLK1D\IC000017.D) API-ES, Neg, SIM, Frag: 140, "neg sim"
MSD1 101, EIC=100.7:101.7 (ICDATA~1\ICBLK1D\IC000017.D) API-ES, Neg, SIM, Frag: 140, "neg sim"
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MSD1 99, EIC=98.7:99.7 (ICDATA~1\ICBLK1D\IC000048.D) API-ES, Neg, SIM, Frag: 140, "neg sim"
MSD1 101, EIC=100.7:101.7 (ICDATA~1\ICBLK1D\IC000048.D) API-ES, Neg, SIM, Frag: 140, "neg sim"
m/z 99
m/z 101
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� 2. �� Cl _, CO3
-2, SO4-2 � 1000 ppm� 1-ppb�� ! (m/z 99 and 101) �� !"#$%
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Amount (ng/mL)
0 1
Area
0
50000
100000
150000
200000
Perchlorate 99, MSD1 101
Correlation: 0.99874
Rel. Res% (4): _3.377
Area = 44472.7433*Amt -1931.1962
2 3 54
Amount (ng/mL)
0 1
Area
0
100000
200000
300000
400000
500000
600000
700000Perchlorate 101, MSD1 99
Correlation: 0.99942
Rel. Res % (3): 1.9387e-2
Area = 143840.996* Amt -2810.7345
2 3 4 5
5
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MSD1 TIC, MS File (ICDATA~1\ICBLK1D\IC000045.D) API-ES, Neg, SIM, Frag: 140, "neg sim"
MSD1 TIC, MS File (ICDATA~1\ICBLK1D\IC000046.D) API-ES, Neg, SIM, Frag: 140, "neg sim"
MSD1 TIC, MS File (ICDATA~1\ICBLK1D\IC000047.D) API-ES, Neg, SIM, Frag: 140, "neg sim"
MSD1 TIC, MS File (ICDATA~1\ICBLK1D\IC000048.D) API-ES, Neg, SIM, Frag: 140, "neg sim"
No interferents200 ppm Cl
_, CO3
_2, SO4
_2
500 ppm Cl_, CO3
_2, SO4
_2
1000 ppm Cl_, CO3
_2, SO4
_2
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Nominal �� ! �� !�� ID �� ! ppb �� % ppb �� %ppb ppb m/z 99 m/z 99 m/z 101 m/z 101
0.5 0.480 0.487 101.46 0.519 108.130.5 0.480 0.477 99.38 0.471 98.130.5 0.480 0.460 95.83 0.490 102.080.5 0.480 0.477 99.38 0.492 102.500.5 0.480 0.520 108.33 0.505 105.210.5 0.480 0.494 102.92 0.509 106.04
�� 0.480 0.486 101.22% 0.498 103.68%
�� ! 0.020 0.042 0.017 0.035
RSD (%) 4.18 4.18 3.41 3.41
Nominal �� ! �� !�� ID �� ! ppb �� % ppb �� %ppb ppb m/z 99 m/z 99 m/z 101 m/z 101
1.0 0.780 0.756 96.92 0.768 98.461.0 0.780 0.810 103.85 0.830 106.411.0 0.780 0.776 99.49 0.772 98.971.0 0.780 0.799 102.44 0.754 96.671.0 0.780 0.788 101.03 0.768 98.461.0 0.780 0.792 101.54 0.807 103.46
�� 0.780 0.787 100.88% 0.783 100.41%
�� ! 0.019 0.024 0.029 0.037
RSD (%) 2.40 2.40 3.70 3.70
0.78 ppb�� !
0.48 ppb�� !
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�� ! �� !�� ! ppb �� % ppb �� %
�� ppb m/z 99 m/z 99 m/z 101 m/z 101200 ppm each of Cl
_, CO3
-2 and SO4-2 0.780 0.799 102.44 0.784 100.51
500 ppm each of Cl_, CO3
-2 and SO4-2 1.000 0.804 80.40 0.808 80.80
1000 ppm each of Cl_, CO3
-2 and SO4-2 1.000 0.930 93.00 0.940 94.00
200 ppm each of Cl_, CO3
-2 and SO4-2 0.780 0.700 89.74 0.770 98.72
500 ppm each of Cl_, CO3
-2 and SO4-2 1.000 0.870 87.00 0.860 86.00
1000 ppm each of Cl_, CO3
-2 and SO4-2 1.000 0.973 97.30 0.986 98.60
200 ppm each of Cl_, CO3
-2 and SO4-2 0.780 0.810 103.85 0.796 102.05
500 ppm each of Cl_, CO3
-2 and SO4-2 1.000 0.851 85.10 0.846 84.60
1000 ppm each of Cl_, CO3
-2 and SO4-2 1.000 0.990 99.00 0.977 97.70
�� 0.000 0.000 0.000
CC 1.0 ppb (No interferents) 0.780 0.747 95.77 0.742 95.13
200 ppm each of Cl_, CO3
-2 and SO4-2 0.780 0.799 102.44 0.777 99.62
500 ppm each of Cl_, CO3
-2 and SO4-2 1.000 0.920 92.00 0.921 92.10
1000 ppm each of Cl_, CO3
-2 and SO4-2 1.000 1.000 100.00 1.040 104.00
200 ppm each of Cl_, CO3
-2 and SO4-2 0.780 0.860 110.26 0.830 106.41
500 ppm each of Cl_, CO3
-2 and SO4-2 1.000 0.930 93.00 0.913 91.30
1000 ppm each of Cl_, CO3
-2 and SO4-2 1.000 1.090 109.00 1.050 105.00
200 ppm each of Cl_, CO3
-2 and SO4-2 0.780 0.800 102.56 0.850 108.97
500 ppm each of Cl_, CO3
-2 and SO4-2 1.000 0.890 89.00 0.904 90.40
1000 ppm each of Cl_, CO3
-2 and SO4-2 1.000 1.040 104.00 1.070 107.00
�� (%) 96.67 97.10
�� ! 0.082 0.080
RSD (%) 8.48 8.22
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�� 1 0.50 0.44 88.00 0.51 102.0 �� !"# 0.5 ppb
�� 2 1.00 0.91 91.00 1.01 100.7 �� !"# 1.0 ppb
�� 3 1.00 0.95 95.16 1.00 99.7 �� !"# 1.0 ppb
�� 4 0.42 0.41 97.33 0.43 102.1 �� w/0.42 ppb
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�� 6 0.35 0.30 86.93 0.33 95.0 �� w/0.35 ppb
�� 6A 1.35 1.18 87.41 1.36 100.6 Sx-6 + 1 ppb
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MSD1 TIC, MS File (ICDATA~1\ICBLK1E\IC000039.D) API-ES, Neg, SIM, Frag: 140, "neg sim"
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MSD1 TIC, MS File (ICDATA~1\ICBLK1E\IC000052.D) API-ES, Neg, SIM, Frag: 140, "neg sim"
MSD1 TIC, MS File (ICDATA~1\ICBLK1E\IC000053.D) API-ES, Neg, SIM, Frag: 140, "neg sim"
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1. EPA METHOD 314.0, "Determination of Per-chlorate in Drinking Water Using Ion Chro-matography", Revision 1.0. November 1999,US EPA, Office of Ground Water and Drink-ing Water, publication 815-B-99-003http://www.epa.gov/ogwdw/methods/met314.pdf
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