GC_EV00699
GC_EV00698
Rtx-5SilMScolumns
are listedonpage9!
• 2 •
RESTEKAdvantage
800-356-1688
response are excellent for the very active compounds endrin, DDT, and
methoxychlor, peaks 89, 95, and 102, respectively.
Low-bleedRtx
®
-5Sil MS columns ensure low detection limits and excellent instru-
ment stability in semivolatiles analysis.
We incorporate 106Method 525.2 target compounds in six new, stablemixtures.
The concentration of each component in thesemixes, 1000µg/mL,
1
is consider-
ably higher than inmixes from other sources, and significantlymore analyses can
be conducted from each ampul of material. We have formulated the new calibra-
tionmixes by chemical class: semivolatiles, PCB congeners, organochlorine pesti-
cides, nitrogen/phosphorous pesticides.
2
Pentachlorophenol is included in the
semivolatilesmix at a concentration four times higher than the other analytes, as
required by themethod. For the convenience of our customers we include hep-
tachlor epoxide isomer A, an analyte not on the target list forMethod 525.2, in
Chlorinated PesticidesMix #2. Six of the nitrogen/phosphorous pesticide analytes
on the target list are unstable in aqueousmatrices; we combine these analytes in
a separatemix (cat.# 32423). We do not include two compounds, disulfoton sul-
foxide and disulfoton sulfone, in either our newmixes or our existingmixes. In
water, disulfoton is rapidly oxidized by chemical reaction to the analogous sulfox-
ide and sulfone. Consequently, the sulfoxide and sulfone cannot be included in the
mixwith disulfoton. We offer individual solutions of the two analytes— please
refer to our catalog or web site.
3
In addition to calibrationmixes forMethod525, we alsohave all neededquality
control standards: internal and surrogate standards, a fortification recovery stan-
dard, and aGC/MS performance check standard. NewMethod525.2 Surrogate
StandardsMix includes optional pyrene-d10. All newmixes are describedonpage 3.
References
1
Components inMethod 525.2 PCB CongenersMix (cat.# 32420) are at 200µg/mL each.
2
Previously availablemixes forMethod 525 include Organochlorine PesticidesMix AB #3
(cat.# 32415), individual Aroclor
®
PCB solutions (cat.# 32075, 32077, 32079, 32081, 32083, 32085,
32087), and TCLP Toxaphene (cat.# 32015).
3
Catalog #MET 652-A andMET 652-B, respectively.
Figure 1
- Low bleed and excellent
resolution of complex semivolatiles
sample, using anRtx
®
-5Sil MS column.
1. isophorone
2. 2-nitro-
m
-xylene
3. dichlorvos
4. hexachlorocyclopentadiene
5. EPTC
6. mevinphos
7. butylate
8. vernolate
9. dimethylphthalate
10. etridiazole (Terrazole
®
)
11. 2,6-dinitrotoluene
12. pebulate
13. acenaphthylene
14. acenaphthylene-d10
15. chloroneb
16. 2-chlorobiphenyl (BZ#1)
17. tebuthiuron
18. 2,4-dinitrotoluene
19. molinate
20. diethyl phthalate
21. fluorene
22. propachlor
23. ethoprop
24. cycloate
25. trifluralin
26. chlorpropham
27.
α
-BHC
28. 2,3-dichlorobiphenyl (BZ#5)
29. hexachlorobenzene
30. atraton
31. prometon
32. simazine
33. atrazine
34. propazine
35.
β
-BHC
36. pentachlorophenol
37.
γ
-BHC (lindane)
38. terbufos
39. diazinon
40. pronamide
41. phenanthrene-d10
42. chlorothalonil
43. phenanthrene
44. methyl parathionOA
45. disulfoton
46. terbacil
47. anthracene
48.
δ
-BHC
49. 2,4,5-trichlorobipenyl
(BZ#29)
50. metribuzin
51. alachlor
52. simetryn
53. ametryn
54. prometryne
55. heptachlor
56. terbutryn
57. di-
n
-butylphthalate
58. bromacil
59. 2,2',4,4'-tetrachloro-
biphenyl (BZ#47)
60. metolachlor
61. chlorpyrifos
62. cyanazine (Bladex)
63. DCPAmethyl ester
(Dacthal
®
)
64. aldrin
65. triadimefon
66. diphenamid
67. MGK-264
68. merphos
69. heptachlor epoxide (isomerB)
70. 2,2',3',4,6-pentachloro-
biphenyl (BZ#98)
71. heptachlor epoxide (isomerA)
72. stirofos (tetrachlorvinphos)
73. butachlor
74.
α
-chlordane
75. fenamiphos
76. pyrene-d10
77.
γ
-chlordane
78. endosulfan I
79. pyrene
80.
trans
-nonachlor
81. napropamide
82. 4,4'-DDE
83. tricyclazole
84.
p
-terphenyl-d14
85. 2,2',4,4',5,6'-hexachloro-
biphenyl (BZ#154)
86. carboxin
87. dieldrin
88. chlorbenzilate
89. endrin
90. 4,4'-DDD
91. endosulfan II
92. endrin aldehyde
93. norflurazon
94. butyl benzyl phthalate
95. 4,4'-DDT
96. bis(2-ethylhexyl)adipate
97. endosulfan sulfate
98. hexazinone
99. triphenylphosphate
100. endrin ketone
101. 2,2',3,3',4,4',6-hepta-
chlorobiphenyl (BZ#171)
102.methoxychlor
103. 2,2',3,3',4,5',6,6'-octa-
chlorobiphenyl (BZ#207)
104. benzo(a)anthracene
105. chrysene-d12
106. chrysene
107. bis(2-ethylhexyl)phthalate
108. fenarimol
109.
cis
-permethrin
110.
trans
-permethrin
111. benzo(b)fluoranthene
112. benzo(k)fluoranthene
113. fluridone (Sonar
®
)
114. benzo(a)pyrene
115. perylene-d12
116. dibenz(a,h)anthracene
117. indeno(1,2,3-cd)pyrene
118. benzo(ghi)perylene
Rtx
®
-5Sil MS 30m, 0.25mm ID, 0.25µm (cat.# 12723)
Sample:
US EPAMethod 525.2 Mix
1µL 10ppm (20ppm IS)
Standards used: cat. #s 31824, 32420,
32421, 32422, 32423, 31825, 31826,
31828, 32291
Inj.:
1.0µL 30psi 0.4min. pulsed splitless
(hold 0.4min.),
4mm DrilledUniliner
®
(cat.# 21055)
Inj. Temp.:
300°C
Carrier Gas:
helium, constant flow
FlowRate:
0.8mL/min.
Oven Temp.:
35°C (hold 1min.) to 270°C@
18°C/min. (hold 0min.) to 330°C
@ 5°C/min. (hold 1min.)
Det:
Agilent 5973GC/MS
Transfer Line Temp.: 280°C
ScanRange:
40–550 amu
Solvent Delay:
4.0min.
Tune:
DFTPP
Ionization:
EI
