TY - JOUR
T1 - Determination of multi-walled carbon nanotube bioaccumulation in earthworms measured by a microwave-based detection technique
AU - Li, Shibin
AU - Irin, Fahmida
AU - Atore, Francis O.
AU - Green, Micah J.
AU - Cañas-Carrell, Jaclyn E.
N1 - Funding Information:
Funding was provided by the U.S. National Science Foundation (NSF) under award CBET — 1133250 .
PY - 2013/2/5
Y1 - 2013/2/5
N2 - Reliable quantification techniques for carbon nanotubes (CNTs) are limited. In this study, a new procedure was developed for quantifying multi-walled carbon nanotubes (MWNTs) in earthworms (Eisenia fetida) based on freeze drying and microwave-induced heating. Specifically, earthworms were first processed into a powder by freeze drying. Then, samples were measured by utilizing 10. s exposure to 30. W microwave power. This method showed the potential to quantitatively measure MWNTs in earthworms at low concentrations (~0.1 μg in 20. mg of earthworm). Also, a simple MWNT bioaccumulation study in earthworms indicated a low bioaccumulation factor of 0.015 ± 0.004. With an appropriate sample processing method and instrumental parameters (power and exposure time), this technique has the potential to quantify MWNTs in a variety of sample types (plants, earthworms, human blood, etc.).
AB - Reliable quantification techniques for carbon nanotubes (CNTs) are limited. In this study, a new procedure was developed for quantifying multi-walled carbon nanotubes (MWNTs) in earthworms (Eisenia fetida) based on freeze drying and microwave-induced heating. Specifically, earthworms were first processed into a powder by freeze drying. Then, samples were measured by utilizing 10. s exposure to 30. W microwave power. This method showed the potential to quantitatively measure MWNTs in earthworms at low concentrations (~0.1 μg in 20. mg of earthworm). Also, a simple MWNT bioaccumulation study in earthworms indicated a low bioaccumulation factor of 0.015 ± 0.004. With an appropriate sample processing method and instrumental parameters (power and exposure time), this technique has the potential to quantify MWNTs in a variety of sample types (plants, earthworms, human blood, etc.).
KW - Bioaccumulation
KW - Carbon nanotubes
KW - Earthworm
KW - Microwave
UR - http://www.scopus.com/inward/record.url?scp=84872191896&partnerID=8YFLogxK
U2 - 10.1016/j.scitotenv.2012.12.037
DO - 10.1016/j.scitotenv.2012.12.037
M3 - Article
C2 - 23298789
AN - SCOPUS:84872191896
SN - 0048-9697
VL - 445-446
SP - 9
EP - 13
JO - Science of the Total Environment
JF - Science of the Total Environment
ER -