(1) BROMOXYNIL and (2) BROMOXYNIL OCTANOATE
(1) C7H3Br2NO MW: (1) 276.93 (2) C15 H17 Br2NO2 (2) 403.13 METHOD: 5010, Issue 2
CAS: (1) 1689-84-5 (2) 1689-99-2 EVALUATION: PARTIAL
OSHA : no PEL NIOSH: no REL ACGIH: no TLV
PROPERTIES:
5010
RTECS: (1) DI3150000 (2) DI3325000 Issue 1: 15 May 1989 Issue 2: 15 August 1994
(1) liquid; BP 194 to 195 °C; (2) solid; MP 45 to 47 °C
SYNONYMS: (1): 2,6-dibromo-4-cyanophenol; 3,5-dibromo-4-hydroxybenzonitrile; (2): 2,6-dibromo-4-cyanophenyl octanoate. SAMPLING SAMPLER:
FILTER (2-µm PTFE membrane)
FLOW RATE:
1 to 3 L/min
VOL-MIN: -MAX:
2 L @ 0.1 mg/m 3 400 L
SHIPMENT:
MEASUREMENT TECHNIQUE:
HPLC, UV DETECTION
ANALYTE:
Bromoxynil; Bromoxynil octanoate
EXTRACTION:
3 mL acetonitrile; 60 min
MOBILE PHASE:
acetonitrile/water gradient; 1 mL/min
refrigerated; protect from light
COLUMN:
µ-Bondapack C 18, 25 cm x 4.6 mm-ID reverse phase or equivalent
SAMPLE STABILITY:
at least 25 days @ 4 °C in the dark [1]
DETECTOR:
UV detector @ 254 nm
BLANKS:
2 to 10 field blanks per set
CALIBRATION:
solutions of analytes in acetonitrile
RANGE:
2 to 30 µg per sample [1]
ESTIMATED LOD: (1) 0.6 and (2) 0.3 µg per sample [1] ACCURACY PRECISION (Sr): RANGE STUDIED:
not studied
BIAS:
none identified
(1) 0.011 @ 18 µg per sample [1] (2) 0.042 @ 35 µg per sample [1]
ˆ ): not evaluated OVERALL PRECISION (S rT ACCURACY:
not determined
APPLICABILITY: The working range is 0.02 to 0.3 mg/m 3 for a 100-L air sample. This method permits the simultaneous determination of both analytes.
INTERFERENCES: None known. Both analytes photodecompose.
OTHER METHODS: A gas chromatographic method has been described [2].
NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94
