With the extensive application of nanotechnology, metal nanoparticles (MNPs) have been widely used, thus are universally detected in the environment. This has caused increasingly concerns due to their toxicity and the potential health risks they pose to humans.
In this work, the concentrations and particle size distributions of MNPs and concentrations of associated metal ionic species in shellfish seafood (clams and oysters) were investigated using single particle inductively coupled plasma mass spectrometry (sp-ICP-MS) and inductively coupled plasma mass spectrometry (ICP-MS).
The MNPs in the clam and oyster tissues were extracted via an alkaline digestion method with a recovery rate of 95.9% (for gold nanoparticles (AuNPs)). Then total concentrations of 41 metal elements were measured in the two types of seafood, of which 20 were selected for sp-ICP-MS analysis.
The results showed that 5 types of MNPs were detectable in clams (Y, La, Ce, Pr, Gd) and 5 types of MNPs were detectable in oysters (Y, La, Ce, Pr, Nd). Size distributions of MNPs in clams and oysters were in the range of 35-55 nm and 30-65 nm, respectively.
Nanoparticle concentrations in clams and oysters ranged from 0.6 to 37.7 ng/g and 4.2-19.7 ng/g, and accounted for 3.4%-50% and 5.5%-46% of the total metal content, respectively. Based on this analysis, the health risks of metals in the two kinds of seafood were evaluated by comparing the Provisional Tolerable Weekly Intake (PTWI) with limits recommended by the World Health Organization (WHO)/FoodandAgricultureOrganization (FAO).
These results provide important information about the presence of metal nanoparticles in seafood and, to the best of our knowledge, this is the first time that the nanoparticles of rare earth elements have been detected and reported in bivalve mollusc tissues.
IMD 0354 |
B1587-50 |
ApexBio |
50 mg |
EUR 431 |
Description: IC50: IMD-0354 showed anti-tumor effect on seven hematologic malignancy cells with IC50 ranged from 0.1M to 0.6 M. IMD-0354, serving as an IKK? inhibitor, inhibits I?B? phosphorylation in NF-?B pathway. |
IMD 0354 |
B1587-S |
ApexBio |
Evaluation Sample |
EUR 81 |
Description: IC50: IMD-0354 showed anti-tumor effect on seven hematologic malignancy cells with IC50 ranged from 0.1M to 0.6 M. IMD-0354, serving as an IKK? inhibitor, inhibits I?B? phosphorylation in NF-?B pathway. |
2',3',5'-triacetyl-5-Azacytidine |
B2822-5 |
Biovision |
|
EUR 153 |
2',3',5'-triacetyl-5-Azacytidine |
C4119-5 |
ApexBio |
5 mg |
EUR 118 |
Description: 2',3',5'-triacetyl-5-Azacytidine (TAC) is the lead prodrug form of 5-azacytidine which may be rapidly absorbed after oral administration [1]. 5-Azacytidine is an inhibitor of DNA methyltransferase [2]. |
5-Iodotubercidin |
A3125-5 |
ApexBio |
5 mg |
EUR 168 |
Description: 5-Iodotubercidin (Itu) is a purine derivative and hence an inhibitor of adenosine kinase with an IC50 value of 26 nM [1]. Adenosine kinase is important in regulating the intracellular and extracellular concentrations of adenosine and hence diverse physiological actions of adenosine [2]. |
Thrombin Receptor Activator for Peptide 5 (TRAP-5) |
A1036-5 |
ApexBio |
5 mg |
EUR 102 |
Description: Thrombin Receptor Activator for Peptide 5 (TRAP-5),(C30H50N8O7), a peptide with the sequence NH2-Ser-Phe-Leu-Leu-Arg-COOH, MW= 634.76. coagulation factor II (thrombin) receptor is a G protein-coupled receptor involved in the regulation of thrombotic response. |
2',5'-Dideoxyadenosine |
2770-5 |
Biovision |
|
EUR 240 |
Teicoplanin A2-5 |
C4938-5 |
ApexBio |
5 mg |
EUR 1157 |
Description: Teicoplanin A2-5, derived from Actinoplanes teichomyceticus, is a glycopeptide antibiotic which produces a broad spectrum of antibiotic activity against gram-positive bacteria. |
5'-deoxy Thymidine |
C4692-5 |
ApexBio |
5 mg |
EUR 180 |
Description: 5'-Deoxy Thymidine has been used as a research tool for antiviral and anticancer studies. 5'-Deoxy Thymidine can be used to study the entry mechanism into human erythrocytes in comparison with other deoxythymidines. |
5-fluoro 203 |
C4114-5 |
ApexBio |
5 mg |
EUR 154 |
Description: 5-fluoro 203 (5F-203) is an antitumor agent and cytotoxic compound that acts as a potent AhR agonist [1][2][3]. The aryl hydrocarbon receptor (AhR) is a ligand-activated transcription factor involved in regulating xenobiotic-metabolizing enzymes such as cytochrome P450. |
W-5 hydrochloride |
B6277-5 |
ApexBio |
5 mg |
EUR 116 |
5-Nonyloxytryptamine oxalate |
B6496-5 |
ApexBio |
5 mg |
EUR 154 |
5-Formylcytosine (5-fC) ELISA Kit |
MET-5102-5 |
Cell Biolabs |
5 x 96 assays |
EUR 2283 |
5-Carboxylcytosine (5-caC) ELISA Kit |
MET-5103-5 |
Cell Biolabs |
5 x 96 assays |
EUR 2283 |
AICA riboside, 5'-phosphate |
9416-5 |
Biovision |
|
EUR 153 |
Individual Reaction Mix 5 |
G065-5 |
ABM |
200 reactions |
EUR 167 |
Necrosis Inhibitor, Necrox-5 |
2229-5 |
Biovision |
|
EUR 615 |
5-Nitroso-8-quinolinol |
B2825-5 |
Biovision |
|
EUR 109 |
Secretin (5 - 27), porcine |
5-01917 |
CHI Scientific |
4 x 1mg |
Ask for price |
FAM azide, 5- isomer |
A8117-5 |
ApexBio |
5 mg |
EUR 166 |
Description: FAM azide for Click chemistry labeling. FAM remains one of the most popular fluorescent lablels for various application. Most instruments capable of fluorescence detection, ranging from plate readers to fluorescence microscopes, are able to work in FAM channel. |
ROX azide, 5- isomer |
A8126-5 |
ApexBio |
5 mg |
EUR 583 |
Description: ROX (rhodamine-X) azide, solid material, and 10 mM solution in DMSO, labeling reagent for Click Chemistry. ROX is a red-emitting rhodamine dye possessing high brightness and fluorescence quantum yield.Pure 5-isomer. |
TAMRA azide, 5- isomer |
A8129-5 |
ApexBio |
5 mg |
EUR 583 |
Description: TAMRA (TMR, tetramethylrhodamine) azide, solid compound, and 10 mM solution in DMSO, labeling reagent for Click Chemistry. Pure 5-isomer.TAMRA is often used as FRET acceptor for FAM fluorophore. |
5'-(N-Cyclopropyl)carboxamidoadenosine |
C4645-5 |
ApexBio |
5 mg |
EUR 128 |
5-trans U-46619 |
C4261-5 |
ApexBio |
5 mg |
EUR 538 |
Description: 5-trans U-46619 is a minor impurity (2-5%) which variably exists in most commercial preparations of U-46619 [1]. U-46619 is a selective thromboxane A2 agonist involved in inducing platelet aggregation and vascular smooth muscle contraction [2]. |
2',5'-dideoxy Adenosine |
C3993-5 |
ApexBio |
5 mg |
EUR 189 |
Description: 2',5'-dideoxy Adenosine, a nucleoside analog, is one of the first identified cell-permeable, P-site inhibitors of adenylate cyclase [1]. Adenylyl cyclase is an enzyme with key regulatory roles in almost all cells. |
2-Methyl-5-hydroxytryptamine hydrochloride |
2768-5 |
Biovision |
|
EUR 185 |
3,3',5'-Triiodo-L-thyronine |
B2017-5 |
Biovision |
|
EUR 229 |
[Pyr5]-Substance P (5-11) |
5-00288 |
CHI Scientific |
4 x 5mg |
Ask for price |
[Trp3, Arg5]-Ghrelin (1-5) |
5-00313 |
CHI Scientific |
4 x 5mg |
Ask for price |
beta-Casomorphin (1-5) (bovine) |
5-00475 |
CHI Scientific |
4 x 5mg |
Ask for price |
Cholecystokinin Octapeptide (1-5) (desulfated) |
5-00970 |
CHI Scientific |
4 x 5mg |
Ask for price |
HIV-gp41-Antigenic Peptide 5 |
5-01331 |
CHI Scientific |
4 x 1mg |
Ask for price |
Magnetic Beads (DNA) 5 mL |
P920-5 |
101Bio |
- |
Ask for price |
Angiotensin 1/2 (1-5) |
A1047-5 |
ApexBio |
5 mg |
EUR 119 |
Description: Angiotensin I/II (1-5) is a peptide (ASP-ARG-VAL-TYR-ILE) that contains the amino acids 1-5 and is converted from Angiotensin I/II.Angiotensin I is formed by the action ofreninonangiotensinogen, an ?-2-globulin with 12 amino acids. |
Angiotensin 1/2 (5-7) |
A1049-5 |
ApexBio |
5 mg |
EUR 119 |
Description: Angiotensin 1/2 (5-7), (C17H27N5O4), a peptide with the sequence H2N-Ile-His-Pro-OH, MW=365.43. Angiotensin is a peptide hormone that causes vasoconstriction and a subsequent increase in blood pressure. |
3,3',5'-Triiodo-L-thyronine |
C5014-5 |
ApexBio |
5 mg |
EUR 134 |
Description: 3,3',5'-triiodo-L-thyronine (reverse T3 or rT3) and 3,5,3'-triiodo-L-thyronine (T3) are the metabolism of thyroxine (T4) [1]. 3,3',5'-Triiodo-L-thyronine is thyroid hormone receptors TR? and TR? antagonist [1]. |
2'-O-Methylpseudouridine-5'-Triphosphate |
B7993-.5 |
ApexBio |
5x100 µl (100 mM) |
EUR 14023 |
2'-Fluoro-thymidine-5'-Triphosphate |
B8035-.5 |
ApexBio |
5x100 µl (100 mM) |
EUR 2059 |
Helioxanthin derivative 5-4-2 |
B4700-5 |
ApexBio |
5 mg |
EUR 683 |
Description: Helioxanthin derivative 5-4-2, an analogue of helioxanthin (ACH126447), is a small-molecule inhibitor of HBV, HSV-1and HSV-2 virus with EC50 values of 0.08 ?M, 0.29 ?M and 0.16 ?M, respectively [1]. |
5?-dihydro-11-keto Testosterone |
C4317-5 |
ApexBio |
5 mg |
EUR 586 |
Description: 5?-dihydro-11-keto Testosterone (11KDHT) is a full androgen receptor agonist comparable to dihydrotestosterone (DHT) [1][2][3]. |
Nickel NTA Magnetic Agarose Bead (5%) |
MagNTANi5-5 |
ABTBeads |
5ml suspension |
EUR 174 |
beta-Casomorphin (1-5) amide (bovine) |
5-00476 |
CHI Scientific |
4 x 5mg |
Ask for price |
cAMP Dependent PK Inhibitor (5-24) |
5-00922 |
CHI Scientific |
4 x 1mg |
Ask for price |
Kinase Domain of Insulin Receptor (5) |
5-01429 |
CHI Scientific |
4 x 1mg |
Ask for price |
Fmoc-2-amino-5-Methoxybenzoic acid |
5-04549 |
CHI Scientific |
1g |
Ask for price |
Fmoc-2-amino-5-Methoxybenzoic acid |
5-04550 |
CHI Scientific |
5g |
Ask for price |
7078D 5 PIPET 5ML STERILE STERILE |
7078D-5 |
CORNING |
25/pk |
EUR 217 |
Description: Disposable Pipets; Disposable Pipets, Serological, Misc |
Beta-Sheet Breaker Peptide iA?5 |
A1005-5 |
ApexBio |
5 mg |
EUR 102 |
Description: Beta-Sheet Breaker Peptide iA?5 (C33H43N5O8), with the sequence H-Leu-Pro-Phe-Phe-Asp-OH, has been shown to inhibit amyloidogenesis in rat brain models. |
2'-Fluoro-2'-deoxyadenosine-5'-Triphosphate |
B7959-.5 |
ApexBio |
5x100 µl (100 mM) |
EUR 2059 |
2'-Fluoro-2'-deoxycytidine-5'-Triphosphate |
B7961-.5 |
ApexBio |
5x100 µl (100 mM) |
EUR 2059 |
2'-Fluoro-2'-deoxyguanosine-5'-Triphosphate |
B7962-.5 |
ApexBio |
5x100 µl (100 mM) |
EUR 2059 |
2'-Fluoro-2'-deoxyuridine-5'-Triphosphate |
B7963-.5 |
ApexBio |
5x100 µl (100 mM) |
EUR 2059 |
3-bromo-5-phenyl Salicylic Acid |
C4516-5 |
ApexBio |
5 mg |
EUR 370 |
Description: Ki: 140 nM for AKR1C1; 1.97 ?M for AKR1C2; 21 ?M for AKR1C3 3-bromo-5-phenyl Salicylic acid is an AKR1C1 inhibitor. |
5-bromo-3-phenyl Salicylic Acid |
C4610-5 |
ApexBio |
5 mg |
EUR 319 |
5-(N,N-dimethyl)-Amiloride (hydrochloride) |
C3505-5 |
ApexBio |
5 mg |
EUR 180 |
Description: 5-(N, N-dimethyl)-Amiloride (hydrochloride), a derivative of amiloride, is an inhibitor of NHE1, NHE2, and NHE3. The Na+/H+ exchanger (NHE) is a protein that has been involved in intracellular pH homeostasis of many mammalian cell types. |
CytoSelect Clonogenic Tumor Cell Isolation Kit (5 x 5 preps) |
CBA-155-5 |
Cell Biolabs |
25 preps |
EUR 3245 |
Description: Many solid tumors contain heterogeneous populations of normal and cancerous cells. Separation of these cell populations is key to an accurate assessment of the true genotypic and phenotypic differences between normal and tumor cells. Our CytoSelect Clonogenic Tumor Cell Isolation Kit uses a proprietary semisolid agar medium to facilitate formation of colonies by cells from solid tumors. Colonies are grown in either a 6-well plate or a 35mm culture dish. These colonies are isolated away from single (i.e. normal) cells by size filtration. The viable cells from these colonies can be easily recovered for further analysis. |
5-Hydroxytryptamine (5-HT) ELISA Kit |
DLR-5-HT-Ge-48T |
DL Develop |
48T |
EUR 469 |
|
Description: A competitive inhibition quantitative ELISA assay kit for detection of 5-Hydroxytryptamine (5-HT) in samples from serum, plasma or other biological fluids. |
5-Hydroxytryptamine (5-HT) ELISA Kit |
DLR-5-HT-Ge-96T |
DL Develop |
96T |
EUR 608 |
|
Description: A competitive inhibition quantitative ELISA assay kit for detection of 5-Hydroxytryptamine (5-HT) in samples from serum, plasma or other biological fluids. |
S-(5'-Adenosyl)-L-methionine chloride (hydrochloride) |
B2826-5 |
Biovision |
|
EUR 120 |
[D-Ala2]- beta-Casomorphin (1-5), bovine |
5-00075 |
CHI Scientific |
4 x 5mg |
Ask for price |
[D-Pro2]-beta-Casomorphin (1-5) , bovine |
5-00133 |
CHI Scientific |
4 x 5mg |
Ask for price |
beta-Endorphin (1-5) + (16-31), human |
5-00488 |
CHI Scientific |
4 x 1mg |
Ask for price |
Biotin-Kinase Domain of Insulin Receptor (5) |
5-00799 |
CHI Scientific |
4 x 1mg |
Ask for price |
cAMP Dependent PK Inhibitor (5-22), amide |
5-00921 |
CHI Scientific |
4 x 1mg |
Ask for price |
Substance P (5-11)/Hepta-Substance P |
5-01979 |
CHI Scientific |
4 x 5mg |
Ask for price |
5-min. Genomic DNA Prep for PCR |
P930-5 |
101Bio |
- |
Ask for price |
2-Acetamidophenyl 5-chloro-2-nitrophenyl sulfide |
C4686-5 |
ApexBio |
5 mg |
EUR 232 |
5-Hydroxyindoleacetic Acid (5-HIAA) ELISA Kit |
DLR-5-HIAA-Ge-48T |
DL Develop |
48T |
EUR 575 |
|
Description: A competitive inhibition quantitative ELISA assay kit for detection of 5-Hydroxyindoleacetic Acid (5-HIAA) in samples from serum, plasma, tissue homogenates or other biological fluids. |
5-Hydroxyindoleacetic Acid (5-HIAA) ELISA Kit |
DLR-5-HIAA-Ge-96T |
DL Develop |
96T |
EUR 753 |
|
Description: A competitive inhibition quantitative ELISA assay kit for detection of 5-Hydroxyindoleacetic Acid (5-HIAA) in samples from serum, plasma, tissue homogenates or other biological fluids. |
General 5-Hydroxytryptamine (5-HT) ELISA Kit |
RD-5-HT-Ge-48Tests |
Reddot Biotech |
48 Tests |
EUR 467 |
General 5-Hydroxytryptamine (5-HT) ELISA Kit |
RD-5-HT-Ge-96Tests |
Reddot Biotech |
96 Tests |
EUR 646 |
General 5-Hydroxytryptamine (5-HT) ELISA Kit |
RDR-5-HT-Ge-48Tests |
Reddot Biotech |
48 Tests |
EUR 488 |
General 5-Hydroxytryptamine (5-HT) ELISA Kit |
RDR-5-HT-Ge-96Tests |
Reddot Biotech |
96 Tests |
EUR 676 |
Checkit Pro C02 - 5 pack |
CP-C02-5 |
Next Advance |
5pack |
EUR 207 |
Description: Pipette Checkit Pro model for 2uL pipettes. Pack of 5. |
Checkit Pro C05 - 5 pack |
CP-C05-5 |
Next Advance |
5pack |
EUR 198 |
Description: Pipette Checkit Pro model for 5uL pipettes. Pack of 5. |
Checkit Pro C10 - 5 pack |
CP-C10-5 |
Next Advance |
5pack |
EUR 198 |
Description: Pipette Checkit Pro model for 10uL pipettes. Pack of 5. |
Checkit Pro C100 - 5 pack |
CP-C100-5 |
Next Advance |
5pack |
EUR 179 |
Description: Pipette Checkit Pro model for 100uL pipettes. Pack of 5. |
Checkit Pro C20 - 5 pack |
CP-C20-5 |
Next Advance |
5pack |
EUR 188 |
Description: Pipette Checkit Pro model for 20uL pipettes. Pack of 5. |
Checkit Pro C200 - 5 pack |
CP-C200-5 |
Next Advance |
5pack |
EUR 179 |
Description: Pipette Checkit Pro model for 200uL pipettes. Pack of 5. |
Checkit Pro C50 - 5 pack |
CP-C50-5 |
Next Advance |
5pack |
EUR 179 |
Description: Pipette Checkit Pro model for 50uL pipettes. Pack of 5. |
[D-Ala2]- beta-Casomorphin (1-5) amide (bovine) |
5-00074 |
CHI Scientific |
4 x 5mg |
Ask for price |
[D-Ala2, Met5]- ß-Casomorphin (1-5), bovine |
5-00092 |
CHI Scientific |
4 x 5mg |
Ask for price |
[D-Pro2]-beta-Casomorphin (1-5) , bovine, amide |
5-00134 |
CHI Scientific |
4 x 5mg |
Ask for price |
General 5-Hydroxyindoleacetic Acid (5-HIAA) ELISA Kit |
RDR-5-HIAA-Ge-48Tests |
Reddot Biotech |
48 Tests |
EUR 613 |
General 5-Hydroxyindoleacetic Acid (5-HIAA) ELISA Kit |
RDR-5-HIAA-Ge-96Tests |
Reddot Biotech |
96 Tests |
EUR 854 |
[D-Ala2, DPro4, Tyr5] -beta-Casomorphin (1-5), amide |
5-00089 |
CHI Scientific |
4 x 5mg |
Ask for price |
[D-Ala2, Hyp4, Tyr5]- beta-Casomorphin (1-5) amide |
5-00090 |
CHI Scientific |
4 x 5mg |
Ask for price |
Lake Victoria is a shared water resource between Kenya, Uganda and Tanzania, which is the second largest freshwater lake in the world. It has long since suffered from the consequences of overexploitation of its resources, mainly fish stocks, and increasingly high pollution.
The closure of 58% of the fish processing plants (FPPs) is attributed to the declining fish stocks due to overfishing and pollution in particular.
The installation and operation of a pilot membrane bioreactor (MBR) in Kisumu, Kenya, adopts an integrated approach by providing an integral, sustainable, cost effective and robust solution for water sanitation which also meets the demand for clean water in fish processing industry, aquaculture and irrigation.
The innovative system comprises a pilot MBR coupled with a recirculation aquaculture system (RAS). The RAS is able to recirculate 90-95% of its water volume; only the water loss through evaporation and drum filter back flushing has to be replaced.
To compensate for this water deficit the MBR treats domestic wastewater for further reuse. Additionally, excess, purified water is used for irrigating a variety of local vegetables and could also be used in fish processing plants.
The pilot-scale MBR plant with around 6 m2 submerged commercial polyethersulfone (PES) membranes provides treated water in basic agreement with FAO (Food and Agriculture Organization) standards for irrigation and aquaculture, showing no adverse effects on tilapia fingerlings production. A novel membrane module with a low-fouling coating is operating stably, but has not yet shown improved performance compared to the commercial one. This article is protected by copyright. All rights reserved.