1 June 2009 Background document for dibutyl phthalate (DBP)
Table 1 Maximum DBP use for formulation and processing in 2007 and 1998 (COWI, IOM & Entec, 2009) Process Tonnage % Tonnage (t/y), 2007 of total, 2007 (t/y), 1998 * Polymers formulation and processing 5,700 69 13,500 Formulation and processing of fiber glass 160 2 Non-polymeric, processing: Processing of paint 160 2 1,250
Blood biomarkers of vitamin D status | The American Journal
Most circulating 25 (OH)D and 1,25 (OH) 2 D is transported in the circulation bound to DBP (80–90%) and to albumin (10–20%). A very small fraction [0.02–0.05% of 25 (OH)D and 0.2–0.6% of total 1,25 (OH) 2 D] remains free or unbound ( 7 ). Thus, under physiologic conditions, nearly all circulating vitamin D compounds are protein bound.
Dibutyl phthalate
Dibutyl phthalate (DBP) is an organic compound which is commonly used as a plasticizer because of its low toxicity and wide liquid range. With the chemical formula C 6 H 4 (CO 2 C 4 H 9 ) 2 , it is a colorless oil, although commercial samples are often yellow.
Table 5 . Cross-reactivity of some compounds structurally
Download Table | Cross-reactivity of some compounds structurally related to DBP by hapten coated icELISA. from publication: An Immunoassay for Dibutyl Phthalate Based on Direct Hapten Linkage to
TABLE 1 . CROSS-REACTIVITY OF SCREENING ASSAYS TO BENZODIAZEPINE
From the standard dose-response curves of several benzodiazepines, the cross-reactivity was estimated as follows: very high with lorazepam (5 times higher than diazepam), high with diazepam...
- What are the concentration gradients for DMP and DBP?
- DMP and DBP standards with different concentrations of 50 μL were added to the unit micropores in the DMP detection area and the DBP detection area, respectively, and the concentration gradients for DMP and DBP were formulated as 0.5, 1.0, 5.0, 10, 50, 100 μg/L and 1.0, 2.0, 4.0, 8.0, 16.0, 32.0 μg/L, respectively.
- What is dibutyl phthalate (DBP)?
- Dibutyl phthalate (DBP) is the most commonly used plasticizer of polyvinyl chloride, which can make products exhibit good softness and it is the main plasticizer in food packaging materials [ 11, 12 ].
- What is the detection range of DMP and DBP?
- The detection ranges of DMP and DBP were 0.5–100 μg/L and 1–32 μg/L, respectively, and the LODs were 0.1 μg/L and 0.5 μg/L, respectively. Compared with the traditional ELISA with the same antibodies and coating antigen, this colorimetric immunoassay effectively improves the detection sensitivity and saves the detection time by 50–70 min.
- What is the recovery rate of DMP & DBP in baijiu & plastic bottled drinks?
- The developed immunoassay can be used for the determination of the DMP and DBP in baijiu and plastic bottled drinks. The recovery rate is in the range of 96.4% and 100.5% and the coefficient of variation is between 1.0% and 7.2%.
- Where were DMP and DBP reagents obtained?
- The antibodies of DMP and DBP were purchased from Kejie Industrial Development Co., Ltd. (Shenzhen, China). Other chemical reagents are analytical grade. Varioskan LUX multimode microplate reader was obtained from Thermo Fisher Scientific Co. (Waltham, MA, USA).
