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Microplastics and Nanoplastics

Table 1 Summary of the exposure experiments and the calculated concentration of particles retained in the different C. Robusta samples exposed to different doses of particles

From: Detection, counting and characterization of nanoplastics in marine bioindicators: a proof of principle study

SampleFraction

Dose concentration (PS part/mL)a

Number of particles available for organism (PS particles)

Counted on chip (n)b

Measured concentration (PS part/mL)

Retention efficiencyc

A2

4.55 × 108

1.37 × 1010

677 ± 17

(8.1 ± 0.1) ×  107

5.93 × 10− 03

B2

4.55 × 109

1.37 × 1011

1763 ± 21

(2.1 ± 0.1) ×  108

1.55 × 10− 03

C2

4.55 × 1010

1.37 × 1012

32 ± 5

(3.8 ± 0.8) ×  106

2.80 × 10− 06

D2

4.55 × 1011

1.37 × 1013

4 ± 2

(4.8 ± 3.2) ×  105

3.50 × 10− 08

  1. a The dose concentration of particles has an uncertainty of 15% as declared by the vendor
  2. b It is possible that surfaces are contaminated with other particles. The very low number of particles counted on chip in sample D2 is probably too close to the detectable limit of particle, so it can be approximated to zero
  3. c The Retention Efficiency is calculated as the measured concentration of particles in the fraction and the number of particles available for the organism
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