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Table 5 Reported and rescaled Minimum Detectable Amounts (MDAs) for MP analysis using Raman or Infrared Spectroscopy reported from DeFrond et al. [27] (95% intervals based on microplastics length distribution power law value in bottled waters from Nizamali J, Mintenig SM, Koelmans AA: Assessing microplastic characteristics in bottled drinking water and air deposition samples using laser direct infrared imaging, in preparation). Desired sampling volumes derived using default mass-aligned screening level without UF’s applied (i.e., 4.6 × 106 particles)

From: Development and application of a health-based framework for informing regulatory action in relation to exposure of microplastic particles in California drinking water

LLL, meas (µm) LUL, meas (µm) MDA (particles) CF
(unitless; 95% CI)
MDA
(particles; 95% CI)
Sampling Volume
(L; 95% CI)
500 5000 88 6.5 × 104
(2.0 × 103 to 2.2 × 106)
5.7 × 106
(1.7 × 105 to 1.9 × 108)
1.2
(3.8 × 10–2 to 42)
212 500 47 1.8 × 104
(1.0 × 103 to 3.4 × 105)
8.3 × 105
(4.8 × 104 to 1.6 × 107)
0.18
(1.0 × 10–2 to 3.4)
20 212 80 2.1 × 102
(40 to 1.1 × 103)
1.7 × 104
(3.2 × 103 to 9.1 × 104)
3.7 × 10–3
(7.0 × 10–4 to 2.0 × 10–2)
1 20 11 1.0
(1.0 to 1.0)
11
(11 to 11)
2.4 × 10–6
(2.4 × 10–6 to 2.5 × 10–6)