Determination of Didecyldimethylammonium Chloride on Wood Surfaces by HPLC with Evaporative Light Scattering Detection

Daniels, C. R.

doi:10.1093/chromsci/30.12.497

Cited by 7 publications

(5 citation statements)

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“…The quat content in the treated sawdust was analyzed by ultrasonic extraction of the sawdust with acetonitrile followed by high-performance liquid chromatography analysis (the instrument was equipped with an evaporative light scattering detector) (Daniels 1992).…”

Section: Treatment With MC Suspensionsmentioning

confidence: 99%

Quantification of mobilized copper(II) levels in micronized copper-treated wood by electron paramagnetic resonance (EPR) spectroscopy

2013

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Sapwood sawdust from southern pine was treated with micronized copper (MC) under various conditions and the mobilized copper(II) (Cu mob ) concentrations were determined in the treated wood by electron paramagnetic resonance (EPR) spectroscopy. The spectral parameters for the copper sulfate (CuSO 4 )-treated sapwood and those of the MC-treated sapwood were very similar. A linear correlation was found between the intensities of copper (Cu) EPR spectra and those of Cu energydispersive X-ray fluorescence spectroscopy in a series of CuSO 4 -treated sapwood reference samples. Thus, the EPR signal intensities could be reliably correlated to the mass of reacted Cu present using this calibration curve. The amount of the Cu mob in sawdust treated by MC suspensions increased during the first 2-3 days after the initial treatment and then reached a maximum during the 7-day monitoring period. In the case of the treatment with MC alone or MC azole, an increased MC concentration led to an elevated amount of Cu (to a maximum of ∼0.23% Cu) solubilized by the sapwood. If the wood was treated with MC quat, the Cu mob initially increased, but at higher concentrations the Cu mob content decreased, due to the interference by the quat cobiocide on the acid reaction between the wood and the basic Cu carbonate. An examination of commercially-treated wood confirmed the laboratory observations.

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Section: Treatment With MC Suspensionsmentioning

confidence: 99%

Quantification of mobilized copper(II) levels in micronized copper-treated wood by electron paramagnetic resonance (EPR) spectroscopy

2013

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“…To minimize the problems caused by the surfactant nature of DDAC and the pyrolysis of the quaternary ammonium center, Crowther and Fairchild (1991) used a deuterated internal standard. Several HPLC methods have been reported for the analysis of DDAC with reasonable accuracy (Daniels, 1992;Conboy et al, 1990; Matthijs and de Henau, 1987;Wee and Kennedy, 1982). One of them uses evaporative light scattering detection and was used for the Antisapstain Quality Assurance Program developed by Forintek Canada Corp., Vancouver, BC. This method can measure as low as 5 /¿g of DDAC.…”

Section: Introductionmentioning

confidence: 99%

Enzyme-linked immunosorbent assay for didecyldimethylammonium chloride, a fungicide used by the forest products industry

Chen¹,

Dwyre-Gygax²,

Smith³

et al. 1995

J. Agric. Food Chem.

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“…DDAC is, however, difficult to analyze because it has a low volatility, lacks a chromophore, and is difficult to derivatize (Suortti and Sirvio ¨, 1990). Despite this, methods have been developed to detect DDAC, which include titration (Lonza Inc., 1988), gas chromatography (GC) (Metcalfe, 1962;Suzuki et al, 1986;Konasewich and St. Quintin, 1994), liquid chromatography (LC) (Larson and Pfeiffer, 1983), and high-performance liquid chromatography (HPLC) (Suortti and Sirvio ¨, 1990;Daniels, 1992;AWPA, 1993). Indirect LC and HPLC methods employ photometric detection (Larson and Pfeiffer, 1983), UV detection (AWPA, 1993), and refractive index detection (Suortti and Sirvio ¨, 1990).…”

Section: Introductionmentioning

confidence: 99%

“…Indirect LC and HPLC methods employ photometric detection (Larson and Pfeiffer, 1983), UV detection (AWPA, 1993), and refractive index detection (Suortti and Sirvio ¨, 1990). However, a direct detection method for HPLC was developed utilizing an evaporative light-scattering detector (ELSD) (Daniels, 1992). The methods reported have relatively high detection limits, which may not be suitable for environmental analysis of DDAC.…”

Section: Introductionmentioning

confidence: 99%

“…While Suortti and Sirvio ¨(1990) developed an HPLC method with a detection limit of approximately 0.3 µg/mL for DDAC. The HPLC method described by Daniels (1992) was developed to detect DDAC within the range of 30-250 ppm, after extraction from wood surfaces. Generally, HPLC and GC are time-consuming, expensive, and have low sample throughput capabilities (Wittmann and Hock, 1990;Van Emon and Gerlach, 1992).…”

Section: Introductionmentioning

confidence: 99%

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Improved Enzyme-Linked Immunosorbent Assay To Detect Didecyldimethylammonium Chloride, a Quaternary Ammonium Compound

Bull

Serreqi

Gamboa

et al. 1998

J. Agric. Food Chem.

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Didecyldimethylammonium chloride (DDAC) is a commonly used wood protectant in Canada and must be monitored due to environmental concerns. Three new DDAC-like immunogens were synthesized and tested for their ability to produce antibodies that complex DDAC. The polyclonal antisera from rabbits immunized with the new hapten conjugates were compared by hapten homologous indirect competitive enzyme-linked immunosorbent assay (CELISA). The resulting antisera recognized DDAC to different degrees. CELISA based on anti-DDAC 3, 2, and 1 antisera had IC50s of 0.05, 16.0, and 17.2 μg/mL, respectively. All the antisera were more sensitive to DDAC than a previously reported polyclonal antiserum. The most sensitive and selective antiserum was produced from the hapten that most closely mimicked DDAC. The selectivity of the three immunoassays for compounds representing DDAC's different epitopes was tested. Each immunoassay exhibited the highest selectivity with compounds that most closely resembled the hapten. The effect of solvents and detergents was determined for the most sensitive immunoassay: CELISA based on anti-DDAC 3 antiserum. Recovery experiments were also carried out with this assay. This immunoassay (IC50 50 ppb) holds promise for the analysis of environmental samples since the regulatory discharge limit is 700 ppb. Keywords: Didecyldimethylammonium chloride; quaternary ammonium compounds; ELISA; immunoassay

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Determination of Didecyldimethylammonium Chloride on Wood Surfaces by HPLC with Evaporative Light Scattering Detection

Cited by 7 publications

References 0 publications

Quantification of mobilized copper(II) levels in micronized copper-treated wood by electron paramagnetic resonance (EPR) spectroscopy

Quantification of mobilized copper(II) levels in micronized copper-treated wood by electron paramagnetic resonance (EPR) spectroscopy

Enzyme-linked immunosorbent assay for didecyldimethylammonium chloride, a fungicide used by the forest products industry

Improved Enzyme-Linked Immunosorbent Assay To Detect Didecyldimethylammonium Chloride, a Quaternary Ammonium Compound

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